Results for "microbiology"
Alexander Fleming
Sir Alexander Fleming was a Scottish physician-scientist whose accidental 1928 discovery of penicillin—the world’s first broadly effective antibiotic—revolutionized medicine, saving an estimated 200+ million lives and earning him the 1945 Nobel Prize.
ScienceCRISPR
** CRISPR is a naturally occurring, bacterial‑derived immune system that has been repurposed into a precise, programmable gene‑editing platform, reshaping biology, medicine, and biotechnology worldwide. **CONTENT:** ## Overview The acronym **CRISPR** stands for *Clustered Regularly Interspaced Short Palindromic Repeats*, a family of DNA motifs that pepper the genomes of roughly **50 % of sequenced bacteria** and an astonishing **≈ 90 % of sequenced archaea**. Each CRISPR locus consists of short, repetitive DNA sequences (the “repeats”) interleaved with unique “spacer” fragments that are direct genetic souvenirs of past viral invasions. When a familiar bacteriophage returns, the CRISPR‑Cas (CRISPR‑associated) machinery transcribes these spacers into RNA guides, which then shepherd Cas nucleases to the matching viral DNA, cleaving it with lethal precision. In this way, prokaryotes wield a **heritable, adaptive immune system** that can be passed on to daughter cells, granting them a memory of past battles. The true scientific fireworks began when researchers realized that the same guide‑RNA logic could be hijacked to target any DNA sequence of interest. The **CRISPR‑Cas9** system, derived from *Streptococcus pyogenes*, became a molecular scalpel that can snip, insert, or replace genetic code in living cells with single‑base accuracy. Since its debut as a genome‑editing tool in **2012**, CRISPR has powered everything from disease‑model mice to potential cures for sickle‑cell anemia, and it now underpins a multibillion‑dollar biotech industry. ## Background & Origins The story starts in **1987**, when Japanese microbiologist **Yoshizumi Ishino** and colleagues, while sequencing the *E. coli* *iap* gene, stumbled upon an odd series of short repeats separated by unique sequences. At the time, the repeats were a curiosity, not a system. It wasn’t until **2002** that **Francisco Mojica** (University of Alicante, Spain) recognized these repeats as a widespread, conserved feature across many archaea and bacteria, coining the term **CRISPR**. In **2005**, a consortium led by **Rodolfo Barrangou** and **John van der Oost** identified the adjacent **Cas (CRISPR‑associated)** genes and proposed that the spacers were derived from invading phage DNA. The hypothesis of an adaptive immune role was spectacularly confirmed in **2007** when Barrangou’s team demonstrated that *Streptococcus thermophilus* strains acquiring new spacers became resistant to the corresponding phage. This experimental proof cemented CRISPR as a **prokaryotic defense system** and set the stage for its biotechnological exploitation. ## Major Achievements & Milestones **CRISPR‑Cas9 Genome Editing** (**2012**): *Jennifer Doudna* (UC Berkeley) and *Emmanuelle Charpentier* (Max Planck Institute) published the first in‑vitro demonstration that a single guide RNA could direct the Cas9 nuclease to cut any DNA sequence matching a 20‑base “protospacer”. This paper (Science, 2012) launched the modern gene‑editing era. **First Human Cell Editing** (**2013**): *Feng Zhang*’s group at the Broad Institute showed that CRISPR‑Cas9 could edit the genome of human embryonic kidney (HEK293) cells, proving the system’s versatility in mammalian cells. **First Clinical Trial** (**2015**): The U.S. National Institutes of Health initiated a Phase I trial (NCT02793856) using CRISPR‑edited T‑cells to treat refractory cancers, marking the transition from bench to bedside. **2020 Nobel Prize in Chemistry** (**2020**): Doudna and Charpentier received the Nobel for “the development of a method for genome editing”, the first Nobel awarded for a technology that originated in bacteria. ## Timeline - **1987**: Ishino et al. discover repetitive DNA elements in *E. coli* (the first CRISPR locus). - **2002**: Mojica coins the term **CRISPR** after comparative genomics across prokaryotes. - **2005**: Identification of **Cas** genes; proposal of an immune function. - **2007**: Barrangou et al. experimentally verify CRISPR‑mediated phage resistance in *S. thermophilus*. - **2012**: Doudna & Charpentier publish the programmable **CRISPR‑Cas9** system. - **2013**: Zhang’s team demonstrates editing in human cells. - **2015**: First human clinical trial using CRISPR‑edited immune cells. - **2020**: Nobel Prize awarded for CRISPR‑Cas9 development. ## Impact & Legacy CRISPR’s impact ripples across science, medicine, agriculture, and ethics. In research labs, it has **accelerated functional genomics**: a gene can be knocked out in a day rather than months, enabling rapid disease‑gene discovery. Clinically, CRISPR‑based therapies are already in late‑stage trials for sickle‑cell disease, β‑thalassemia, and Leber congenital amaurosis, promising **curative interventions** for previously intractable genetic disorders. Agriculturally, CRISPR has produced **drought‑tolerant wheat**, **fungus‑resistant mushrooms**, and **low‑gluten wheat**, illustrating its potential to address food security. Economically, the CRISPR market is projected to exceed **USD 15 billion** by 2027, spawning startups such as **Editas**, **CRISPR Therapeutics**, and **Intellia**. Beyond the lab, CRISPR has ignited global conversations about **gene drives**, **germline editing**, and the moral limits of “designer organisms”. The 2018 **International Summit on Human Gene Editing** placed CRISPR at the center of policy debates, underscoring that a tool born in bacteria now shapes the future of humanity. ## Records & Notable Facts - **Most ubiquitous adaptive immune system**: present in ~50 % of bacteria and ~90 % of archaea. - **Fastest adoption of a molecular tool**: from 2012 discovery to > 1 million scientific papers citing CRISPR by 2023. - **First “molecular scalpel”**: Doudna famously described CRISPR‑Cas9 as a “molecular scalpel” that can cut DNA with unprecedented precision. > “We have a tool that can edit the genome with unprecedented precision.” – **Jennifer Doudna**, 2012 **INFOBOX:** - Full Name: **Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)** - Born: **N/A** - Died: **N/A** - Age: **N/A** - Nationality: **N/A** - Occupation: **Adaptive immune system of prokaryotes; genome‑editing platform** - Active Years: **1987–present** - Known For: **Prokaryotic antiviral defense; CRISPR‑Cas9 genome editing** - Awards: **2020 Nobel Prize in Chemistry (Charpentier & Doudna) – for CRISPR‑Cas9** - Spouse: **N/A** - Children: **N/A** - Height: **N/A** - Net Worth: **N/A** - World Records: **Most widely used gene‑editing technology** - Championships: **N/A** **FACTS:** - Birth Date: **N/A** (type: date) - Birth Place: **N/A** (type: location) - Death Date: **N/A** (type: date) - Career Start: **1987** (type: year) - Peak Achievement: **CRISPR‑Cas9 genome editing (2012)** (type: achievement) - Career Earnings: **N/A** (type: statistic) - World Record: **Most cited molecular biology tool (over 1 million citations by 2023)** (type: record) - Famous Quote: **“We have a tool that can edit the genome with unprecedented precision.” – Jennifer Doudna** (type: quote) - Fun Fact: **The spacers in a CRISPR array are essentially a “genetic diary” of past viral attacks.** (type: trivia) - Legacy Stat: **≈ 90 % of sequenced archaea contain CRISPR loci** (type: statistic) **TAGS:** crispr, gene editing, biotechnology, microbiology, genetics, molecular biology, crispr-cas9, prokaryotes *Word count: ~860*
ScienceVirology
** Virology is the scientific discipline that investigates viruses—their structure, genetics, life cycles, interactions with hosts, and applications in medicine and biotechnology. **CONTENT:** ## Overview Virology sits at the intersection of **microbiology**, **molecular biology**, and **immunology**, focusing on entities that straddle the line between living and non‑living. Viruses are obligate intracellular parasites; they consist of nucleic acid (either **DNA** or **RNA**) encased in a protein **capsid**, and in many cases a lipid **envelope** derived from host membranes. Their sizes range from ~20 nm for the smallest **parvoviruses** to >300 nm for giant **Mimiviruses**, and a single virion can contain from a few thousand to several hundred thousand base pairs of genetic material. The field examines how viruses **detect**, **enter**, and **replicate** within host cells, exploiting cellular machinery to produce progeny virions—often at rates exceeding 10^9 particles per infected cell within hours. Virologists also study viral **evolution**, which proceeds at rates up to 10^−3 substitutions per site per year for RNA viruses, far faster than most cellular organisms. This rapid evolution underlies the emergence of new pathogens, vaccine escape mutants, and antiviral resistance. Beyond disease, viruses are powerful tools. Engineered **viral vectors** deliver therapeutic genes in gene therapy, while bacteriophages are being revived as precision antibiotics. The discipline therefore bridges fundamental science with translational applications, from pandemic preparedness to synthetic biology. ## History/Background The roots of virology trace back to the late 19th century. In 1892, Dmitri **Ivanovsky** demonstrated that the agent causing tobacco mosaic disease could pass through porcelain filters that retained bacteria, hinting at a “filterable” pathogen. Martin **Beijerinck** coined the term **virus** in 1898, describing it as a “contagium vivum fluidum.” The first animal virus, **foot‑and‑mouth disease virus**, was isolated in 1898, and the first human virus, **yellow fever virus**, was identified in 1901. The 20th century saw rapid methodological advances. The invention of the **electron microscope** in the 1930s allowed direct visualization of virions, confirming their particulate nature. In 1952, **Alfred Hershey** and **Martha Chase** used radiolabeled phage to prove that DNA, not protein, carries genetic information—a cornerstone of molecular genetics. The discovery of the **reverse transcriptase** enzyme in 1970 (Howard Temin, David Baltimore) revealed that RNA viruses could integrate into host genomes, reshaping our understanding of genetic flow. The **Molecular Era** began in the 1980s with recombinant DNA technology, enabling the cloning of viral genomes and the creation of attenuated vaccines (e.g., measles, mumps, rubella). The 2000s brought high‑throughput **next‑generation sequencing**, allowing real‑time tracking of viral outbreaks, exemplified by the rapid sequencing of the **SARS‑CoV‑2** genome in January 2020—completed within weeks of the first reported cases. ## Key Information - **Classification:** Viruses are grouped by nucleic acid type (DNA vs. RNA), strandedness (single vs. double), sense (positive vs. negative), envelope presence, and replication strategy (the **Baltimore classification**, six groups). - **Detection & Isolation:** Techniques include **PCR**, **RT‑PCR**, **ELISA**, **viral culture** in cell lines (e.g., Vero, MDCK), and **plaque assays** to quantify infectious units (plaque‑forming units, PFU). - **Life Cycles:** Canonical cycles include **attachment**, **penetration**, **uncoating**, **replication**, **assembly**, and **release** (via lysis or budding). Some viruses, like **herpesviruses**, establish latency, persisting in host cells for life. - **Therapeutics:** Antiviral drugs target specific stages—**acyclovir** inhibits viral DNA polymerase; **oseltamivir** blocks neuraminidase in influenza. **Vaccines** (live‑attenuated, inactivated, subunit, mRNA) have eradicated smallpox (1980) and dramatically reduced polio incidence. - **Research Tools:** **Bacteriophages** serve as model systems for genetics; **adenoviral vectors** deliver CRISPR components; **virus‑like particles (VLPs)** provide safe immunogens. ## Significance Virology is pivotal to global health. Emerging infections—HIV (identified 1983), Ebola (1976), Zika (2015), and COVID‑19 (2020)—have underscored the need for rapid viral detection, surveillance, and vaccine development. Understanding viral mechanisms informs **immune system** research, revealing how innate sensors (e.g., **RIG‑I**, **cGAS**) detect foreign nucleic acids and trigger interferon responses. Economically, the field drives billions in pharmaceutical revenue; the mRNA vaccine platform, honed through decades of virology, delivered >10 billion doses of COVID‑19 vaccines within two years, showcasing the translational power of viral research. Moreover, phage therapy offers a sustainable alternative to antibiotics amid rising antimicrobial resistance. In ecological terms, viruses regulate microbial populations, influence nutrient cycles, and shape evolutionary trajectories across all domains of life. Their ubiquity—estimated 10^31 virions on Earth—makes them the most abundant biological entities, a fact that continues to inspire new scientific frontiers, from **viral dark matter** metagenomics to synthetic virology. **INFOBOX:** - Name: Virology - Type: Scientific discipline (subfield of microbiology) - Date: Established as a distinct field in the late 19th century (circa 1892) - Location: Global (research institutions, universities, public health labs) - Known For: Study of virus structure, replication, pathogenesis, and application in medicine and biotechnology **TAGS:** virology, viruses, microbiology, immunology, molecular biology, infectious disease, vaccine development, gene therapy
ScienceBiology Encyclopedia Entry 1775292064
**Biology Encyclopedia Entry 1775292064** refers to the study of the structure, function, growth, evolution, distribution, and taxonomy of living organisms and their interactions with the environment.
ScienceMycology
Mycology is the scientific discipline that investigates fungi—their diversity, genetics, ecology, biochemistry, and myriad interactions with humans and the environment.
ScienceBiology Encyclopedia Entry 1775343126
** Biology is the natural science that studies living organisms and their interactions with the environment, encompassing the study of structure, function, growth, evolution, distribution, and taxonomy of all living things. **CONTENT:** ## Overview Biology is a vast and diverse field that explores the intricacies of life on Earth. It encompasses various disciplines, including botany, zoology, microbiology, ecology, genetics, and biochemistry, among others. Biologists examine the structure and function of living organisms, from the molecular level to entire ecosystems. They investigate how organisms adapt to their environments, interact with each other, and evolve over time. Biology has numerous applications in medicine, agriculture, conservation, and biotechnology, making it a crucial field for understanding the natural world and addressing pressing global challenges. Biology is a dynamic and rapidly evolving field, with new discoveries and advancements being made regularly. The development of new technologies, such as DNA sequencing and microscopy, has greatly expanded our understanding of the complexity and diversity of life on Earth. Biologists use a range of methods, including experimentation, observation, and modeling, to investigate the intricate relationships between living organisms and their environments. ## History/Background The study of biology dates back to ancient civilizations, with early philosophers such as Aristotle and Epicurus contributing to our understanding of living organisms. However, the modern field of biology began to take shape in the 19th century with the work of scientists such as Charles Darwin and Gregor Mendel. Darwin's theory of evolution through natural selection revolutionized our understanding of the diversity of life on Earth, while Mendel's work on genetics laid the foundation for modern genetic research. The 20th century saw significant advances in biology, including the discovery of the structure of DNA by James Watson and Francis Crick in 1953. This breakthrough led to a deeper understanding of the genetic code and the mechanisms of heredity. The development of molecular biology, which focuses on the study of biological molecules such as DNA, RNA, and proteins, has been a major driver of progress in the field. ## Key Information Some of the key concepts and discoveries in biology include: * **Cell theory**: The idea that all living organisms are composed of cells, which was first proposed by Matthias Jakob Schleiden and Theodor Schwann in 1839. * **Evolution**: The process by which living organisms change over time through the accumulation of genetic mutations and adaptations. * **Genetics**: The study of heredity and the transmission of traits from one generation to the next. * **Photosynthesis**: The process by which plants, algae, and some bacteria convert light energy into chemical energy. * **Mitosis**: The process by which eukaryotic cells divide to produce two daughter cells. ## Significance Biology has numerous applications in various fields, including: * **Medicine**: Understanding the biology of disease has led to the development of new treatments and therapies. * **Agriculture**: Biotechnology has improved crop yields and resistance to pests and diseases. * **Conservation**: Biology informs our understanding of ecosystems and the impact of human activities on the environment. * **Biotechnology**: Biology has led to the development of new technologies, such as genetic engineering and gene editing. INFOBOX: - **Name:** Biology - **Type:** Natural science - **Date:** Ancient civilizations (e.g., Aristotle, Epicurus) - **Location:** Global - **Known For:** Understanding the structure, function, growth, evolution, distribution, and taxonomy of all living things TAGS: biology, natural science, living organisms, evolution, genetics, ecology, botany, zoology, microbiology, biochemistry, biotechnology, medicine, agriculture, conservation.
ScienceBiology Encyclopedia Entry 1775657045
** Biology is the scientific study of living organisms, encompassing the structure, function, growth, evolution, distribution, and taxonomy of all living things. **CONTENT:** ### Overview Biology is a vast and diverse field that seeks to understand the intricacies of life on Earth. From the molecular mechanisms that govern cellular processes to the complex interactions within ecosystems, biology is a constantly evolving discipline that has revolutionized our understanding of the natural world. As a natural science, biology draws on principles from chemistry, physics, mathematics, and other disciplines to unravel the mysteries of life. With its roots in ancient Greece, where philosophers like Aristotle and Plato first explored the nature of living things, biology has grown into a sophisticated and interdisciplinary field that informs our understanding of the world and our place within it. Biology encompasses a broad range of subfields, each with its own distinct focus and methodology. These include botany, the study of plants; zoology, the study of animals; microbiology, the study of microorganisms; ecology, the study of relationships between organisms and their environments; and genetics, the study of heredity and variation. By exploring these various aspects of life, biologists have made significant contributions to our understanding of the natural world, from the discovery of DNA's double helix structure to the development of vaccines and treatments for diseases. ### History/Background The study of biology dates back to ancient civilizations, where philosophers and naturalists first observed and described the natural world. In ancient Greece, philosophers like Aristotle (384-322 BCE) and Theophrastus (371-287 BCE) wrote extensively on the nature of living things, laying the foundations for the scientific study of biology. The Greek physician Hippocrates (460-370 BCE) and his followers, known as the Hippocratic school, made significant contributions to the understanding of human health and disease. In the 16th century, the Renaissance saw a resurgence of interest in the natural world, with scientists like Andreas Vesalius (1514-1564) and William Harvey (1578-1657) making major discoveries in anatomy and physiology. The development of the microscope in the 17th century allowed scientists like Antonie van Leeuwenhoek (1632-1723) to observe microorganisms, laying the foundation for the field of microbiology. ### Key Information * **Cell Theory**: The cell is the basic unit of life, and all living organisms are composed of one or more cells. * **DNA Structure**: DNA is a double-stranded helix, with sugar and phosphate molecules forming the backbone and nitrogenous bases projecting inward. * **Evolution**: All living organisms share a common ancestor and have evolved over time through the process of natural selection. * **Photosynthesis**: Plants and some microorganisms convert light energy into chemical energy through the process of photosynthesis. * **Respiration**: Living organisms require oxygen to convert glucose into energy through the process of cellular respiration. ### Significance Biology has had a profound impact on our understanding of the natural world and our place within it. From the development of vaccines and treatments for diseases to the discovery of new species and ecosystems, biology has expanded our knowledge of the world and its many wonders. By understanding the intricacies of life, biologists have made significant contributions to fields like medicine, agriculture, and conservation, improving the human condition and protecting the natural world. **INFOBOX:** - **Name:** Biology - **Type:** Natural Science - **Date:** Ancient Greece (circa 400 BCE) - **Location:** Global - **Known For:** Understanding the structure, function, growth, evolution, distribution, and taxonomy of all living things **TAGS:** biology, natural science, cell theory, DNA, evolution, photosynthesis, respiration, ecology, genetics, microbiology, botany, zoology, conservation, medicine, agriculture.
PeopleRobert Koch
Robert Koch was the German physician who transformed medicine by proving that specific microscopic organisms cause specific diseases, earning the 1905 Nobel Prize for his isolation of the tuberculosis bacillus.
ScienceBiology Encyclopedia Entry 1776508869
** This encyclopedia entry is about the fascinating world of biology, exploring its history, key concepts, and significance in understanding the living world. **CONTENT:** ### Overview Biology is the scientific study of living organisms and their interactions with the environment. It encompasses a wide range of disciplines, including botany, zoology, ecology, genetics, and microbiology, among others. Biology seeks to understand the structure, function, growth, evolution, distribution, and taxonomy of all living things, from the simplest bacteria to complex ecosystems. By exploring the intricacies of life, biologists have made significant contributions to our understanding of the natural world, improving human health, agriculture, and the environment. Biology is a dynamic and constantly evolving field, with new discoveries and advancements being made regularly. From the discovery of DNA structure to the mapping of the human genome, biology has come a long way in understanding the complexities of life. The field has also led to significant breakthroughs in medicine, agriculture, and conservation, improving human lives and the health of the planet. ### History/Background The study of biology dates back to ancient civilizations, with early philosophers and scientists such as Aristotle and Galen making significant contributions to the field. However, it wasn't until the 19th century that biology began to take shape as a distinct scientific discipline. The discovery of cells by Antonie van Leeuwenhoek in 1676 marked the beginning of cellular biology, while the work of Charles Darwin on evolution through natural selection in 1859 revolutionized our understanding of the diversity of life on Earth. The 20th century saw significant advances in biology, including the discovery of DNA structure by James Watson and Francis Crick in 1953 and the development of genetic engineering in the 1970s. Today, biology is a global community of scientists working together to understand the complexities of life and address some of the world's most pressing challenges, including climate change, disease, and food security. ### Key Information **Key Concepts:** - **Cell Theory:** The idea that all living organisms are composed of cells, which are the basic units of life. - **Evolution:** The process by which living organisms change over time through genetic variation and natural selection. - **Photosynthesis:** The process by which plants, algae, and some bacteria convert light energy into chemical energy. - **Genetics:** The study of heredity and variation in living organisms. **Important Figures:** - **Aristotle:** Ancient Greek philosopher who made significant contributions to the study of biology. - **Charles Darwin:** British naturalist who developed the theory of evolution through natural selection. - **James Watson and Francis Crick:** American and British scientists who discovered the structure of DNA. **Significant Discoveries:** - **DNA Structure:** The discovery of the double helix structure of DNA in 1953. - **Genetic Engineering:** The development of techniques to manipulate DNA and introduce new traits into organisms. - **CRISPR Gene Editing:** The discovery of a powerful tool for editing genes and treating genetic diseases. ### Significance Biology has significant implications for human health, agriculture, and the environment. Understanding the complexities of life has led to significant breakthroughs in medicine, including the development of vaccines, antibiotics, and gene therapies. Biology has also improved agriculture, enabling farmers to grow more food with less water and fertilizer, and has led to the development of sustainable practices for conserving biodiversity. In addition, biology has significant implications for our understanding of the natural world and our place within it. By studying the diversity of life on Earth, biologists have gained insights into the evolution of complex systems and the interconnectedness of living organisms. **INFOBOX:** - **Name:** Biology - **Type:** Scientific discipline - **Date:** Ancient civilizations to present day - **Location:** Global - **Known For:** Understanding the structure, function, growth, evolution, distribution, and taxonomy of all living things **TAGS:** biology, life sciences, ecology, genetics, evolution, cell biology, microbiology, botany, zoology, conservation.
ScienceBiology Encyclopedia Entry 1776738184
** Biology is the natural science that studies living organisms and their interactions with the environment, focusing on the structure, function, growth, evolution, distribution, and taxonomy of all living things. **CONTENT:** ### Overview Biology is a vast and diverse field that encompasses various disciplines, including botany, zoology, microbiology, ecology, and genetics. It is an interdisciplinary science that draws from chemistry, physics, mathematics, and Earth sciences to understand the intricate mechanisms of life. Biologists investigate the complexities of living organisms, from the molecular level to entire ecosystems, to unravel the mysteries of life and its many forms. By exploring the intricate relationships between organisms and their environments, biologists contribute to our understanding of the natural world and inform solutions to pressing global issues, such as climate change, conservation, and human health. The study of biology has a rich history, dating back to ancient civilizations, where early observations of the natural world laid the foundation for modern biological inquiry. From the works of Aristotle to the groundbreaking discoveries of Charles Darwin, biology has evolved into a sophisticated science that relies on empirical evidence, experimentation, and theoretical frameworks to advance our knowledge of living systems. ### History/Background The earliest recorded contributions to biology date back to ancient Greece, where philosophers like Aristotle (384-322 BCE) and Theophrastus (371-287 BCE) described the natural world and its inhabitants. The Greek physician Hippocrates (460-370 BCE) is considered one of the founders of medicine, while the Roman naturalist Pliny the Elder (23-79 CE) wrote extensively on botany, zoology, and medicine. In the 16th century, the scientific revolution led by figures like Andreas Vesalius (1514-1564 CE) and William Harvey (1578-1657 CE) laid the groundwork for modern biology. The discovery of cells by Antonie van Leeuwenhoek (1632-1723 CE) and the development of the theory of evolution by Charles Darwin (1809-1882 CE) in his seminal work "On the Origin of Species" (1859 CE) marked significant milestones in the history of biology. ### Key Information * **Cell theory**: The fundamental unit of life, cells are the building blocks of all living organisms. * **Evolution**: The process of change in the characteristics of a species over time, driven by genetic variation, mutation, and natural selection. * **Photosynthesis**: The process by which plants, algae, and some bacteria convert light energy into chemical energy. * **Genetics**: The study of heredity and variation, which has led to a deeper understanding of the genetic code and its role in shaping life. * **Ecology**: The study of the relationships between organisms and their environments, including the interactions between species and their habitats. ### Significance Biology has far-reaching implications for various aspects of human life, from medicine and agriculture to conservation and environmental sustainability. The discovery of antibiotics, vaccines, and other medical treatments has saved countless lives and improved public health. Advances in biotechnology have enabled the development of genetically modified organisms (GMOs) and gene editing tools like CRISPR, which hold promise for treating genetic diseases and improving crop yields. The study of biology also informs our understanding of the natural world and our place within it. By exploring the intricate relationships between organisms and their environments, biologists contribute to our knowledge of ecosystems, biodiversity, and the impact of human activities on the environment. **INFOBOX:** - **Name:** Biology - **Type:** Natural science - **Date:** Ancient Greece (4th century BCE) to present - **Location:** Global - **Known For:** Understanding the structure, function, growth, evolution, distribution, and taxonomy of all living things **TAGS:** Biology, life sciences, natural science, ecology, evolution, genetics, botany, zoology, microbiology, conservation, environmental sustainability.
ScienceBiology Encyclopedia Entry 1775043249
** Biology is the natural science that studies living organisms and their interactions with the environment, encompassing the study of structure, function, growth, evolution, distribution, and taxonomy of all living things. **CONTENT:** ### Overview Biology is a vast and diverse field that seeks to understand the intricacies of life on Earth. From the simplest bacteria to the most complex ecosystems, biology encompasses the study of all living organisms, including their structure, function, growth, evolution, distribution, and taxonomy. The field of biology is divided into several subfields, including botany, zoology, microbiology, ecology, genetics, and biochemistry, among others. Biologists use a range of techniques, including experimentation, observation, and modeling, to understand the complex interactions between living organisms and their environment. The study of biology has a long history, dating back to ancient civilizations such as Greece and Egypt. However, it was not until the 19th century that biology emerged as a distinct scientific discipline. The discovery of the cell by Antonie van Leeuwenhoek in 1676 marked a significant turning point in the history of biology, as it provided a new understanding of the basic building blocks of life. The development of the theory of evolution by Charles Darwin in 1859 further transformed the field, providing a framework for understanding the diversity of life on Earth. Today, biology is a rapidly evolving field, with new discoveries and advances in technology continually expanding our understanding of the natural world. From the human genome project to the discovery of new species, biology continues to shape our understanding of the world and our place within it. ### History/Background The study of biology has a rich and varied history, spanning thousands of years. Ancient civilizations such as Greece and Egypt recognized the importance of living organisms and their interactions with the environment. The Greek philosopher Aristotle (384-322 BCE) is considered one of the earliest biologists, as he wrote extensively on the natural history of plants and animals. The scientific revolution of the 16th and 17th centuries marked a significant turning point in the history of biology. The discovery of the microscope by Antonie van Leeuwenhoek in 1676 provided a new understanding of the basic building blocks of life, while the development of the theory of evolution by Charles Darwin in 1859 provided a framework for understanding the diversity of life on Earth. The 20th century saw significant advances in biology, including the discovery of DNA structure by James Watson and Francis Crick in 1953 and the development of genetic engineering in the 1970s. Today, biology is a rapidly evolving field, with new discoveries and advances in technology continually expanding our understanding of the natural world. ### Key Information * **Structure and Function**: Biology is concerned with the structure and function of living organisms, including their cells, tissues, organs, and systems. * **Evolution**: The theory of evolution provides a framework for understanding the diversity of life on Earth, including the mechanisms of speciation, adaptation, and extinction. * **Genetics**: Genetics is the study of heredity and variation, including the structure and function of DNA and the mechanisms of gene expression. * **Ecology**: Ecology is the study of the interactions between living organisms and their environment, including the relationships between species and their ecosystems. * **Biochemistry**: Biochemistry is the study of the chemical processes that occur within living organisms, including metabolism, energy production, and the synthesis of biomolecules. ### Significance Biology is a fundamental science that underlies many areas of human endeavor, including medicine, agriculture, conservation, and environmental science. The study of biology has led to significant advances in our understanding of the natural world, including the discovery of new species, the development of new technologies, and the improvement of human health. The significance of biology extends beyond the scientific community, as it has a profound impact on our daily lives and the world around us. From the food we eat to the air we breathe, biology plays a critical role in shaping our understanding of the world and our place within it. **INFOBOX:** - **Name:** Biology - **Type:** Natural Science - **Date:** 19th century (emerged as a distinct scientific discipline) - **Location:** Global (studied in laboratories, classrooms, and field sites around the world) - **Known For:** Understanding the structure, function, growth, evolution, distribution, and taxonomy of all living things. **TAGS:** biology, natural science, living organisms, structure, function, growth, evolution, distribution, taxonomy, botany, zoology, microbiology, ecology, genetics, biochemistry.
ScienceBiology Encyclopedia Entry 1775978044
** This entry is about the fundamental principles and processes that govern the living world, encompassing the study of all living organisms, from the simplest bacteria to complex ecosystems. **CONTENT:** ## Overview Biology is the scientific study of living organisms, including their structure, function, growth, evolution, distribution, and taxonomy. It is a vast and diverse field that encompasses various disciplines, such as botany, zoology, microbiology, ecology, and genetics. Biologists seek to understand the intricate relationships between living organisms and their environment, as well as the mechanisms that govern life itself. From the molecular machinery of cells to the complex interactions of ecosystems, biology provides a comprehensive framework for understanding the natural world. Biology has its roots in ancient civilizations, where people first observed and described the characteristics of living organisms. However, it wasn't until the 19th century that biology emerged as a distinct scientific discipline. The discovery of cells by Antonie van Leeuwenhoek in 1676 marked the beginning of modern biology. Since then, numerous groundbreaking discoveries have transformed our understanding of life, from the structure of DNA to the mechanisms of evolution. ## History/Background The study of biology dates back to ancient civilizations, where people first observed and described the characteristics of living organisms. The Greek philosopher Aristotle (384-322 BCE) is considered one of the earliest biologists, as he described the characteristics of plants and animals in his work "Historia Animalium." However, it wasn't until the 19th century that biology emerged as a distinct scientific discipline. The discovery of cells by Antonie van Leeuwenhoek in 1676 marked the beginning of modern biology. Leeuwenhoek's observations of microorganisms using a microscope laid the foundation for the study of microbiology. In the 19th century, scientists such as Charles Darwin (1809-1882) and Gregor Mendel (1822-1884) made significant contributions to our understanding of evolution and genetics. ## Key Information * **Cell Theory:** The cell is the basic unit of life, and all living organisms are composed of one or more cells. * **DNA Structure:** DNA is a double-stranded helix that contains genetic information, which is passed from one generation to the next. * **Evolution:** Life on Earth has evolved over millions of years through the process of natural selection, where individuals with favorable traits are more likely to survive and reproduce. * **Photosynthesis:** Plants and some microorganisms convert light energy into chemical energy through the process of photosynthesis. * **Respiration:** Living organisms require oxygen to convert glucose into energy through the process of cellular respiration. ## Significance Biology has far-reaching implications for our understanding of the natural world and our place within it. The study of biology has led to numerous breakthroughs in medicine, agriculture, and conservation. For example, the discovery of antibiotics has saved countless lives, while advances in genetic engineering have enabled the development of new crops and treatments for diseases. Biology also has significant implications for our understanding of the environment and our impact on it. The study of ecology has highlighted the importance of preserving biodiversity and mitigating the effects of climate change. By understanding the intricate relationships between living organisms and their environment, we can work towards a more sustainable future. **INFOBOX:** - **Name:** Biology - **Type:** Scientific Discipline - **Date:** 19th century (emerged as a distinct scientific discipline) - **Location:** Global (studied in every region of the world) - **Known For:** Understanding the fundamental principles and processes that govern the living world **TAGS:** biology, cells, DNA, evolution, ecology, genetics, microbiology, botany, zoology.
ScienceBiology Around The World
**Biology Around the World** is a vast and diverse field of study that explores the intricacies of life on Earth, from the simplest microorganisms to complex ecosystems, and its significance in understanding our planet's rich biodiversity.
ScienceBiology Encyclopedia Entry 1775114764
** This entry is about the fascinating world of **Microbial Ecology**, a field of study that explores the complex interactions between microorganisms and their environments. **CONTENT:** ## Overview Microbial ecology is a multidisciplinary field of study that delves into the intricate relationships between microorganisms, such as bacteria, archaea, fungi, and viruses, and their environments. These tiny organisms play a vital role in shaping our planet's ecosystems, influencing the global climate, and impacting human health. Microbial ecologists seek to understand the complex interactions between microorganisms and their environments, from the molecular to the ecosystem level. By studying microbial ecology, scientists can gain insights into the evolution of life on Earth, the functioning of ecosystems, and the impact of human activities on the environment. Microbial ecology is a rapidly evolving field, driven by advances in molecular biology, genomics, and computational modeling. Researchers use a range of techniques, including microscopy, culturing, and sequencing, to study microbial communities and their interactions with their environments. From the depths of the ocean to the human gut, microbial ecologists are uncovering the intricate web of relationships between microorganisms and their hosts. ## History/Background The study of microbial ecology dates back to the early 20th century, when scientists first began to appreciate the importance of microorganisms in shaping ecosystems. However, it wasn't until the 1960s and 1970s that the field of microbial ecology began to take shape. This was largely driven by the work of scientists such as Lynn Margulis, who proposed the theory of symbiogenesis, which posits that complex life forms arise from the interactions between simpler organisms. In the 1980s and 1990s, advances in molecular biology and genomics revolutionized the field of microbial ecology. The development of techniques such as PCR (polymerase chain reaction) and DNA sequencing enabled researchers to study microbial communities in unprecedented detail. Today, microbial ecologists use a range of tools, including metagenomics, metatranscriptomics, and computational modeling, to study the complex interactions between microorganisms and their environments. ## Key Information * **Microbial diversity**: Microbial ecologists estimate that there are between 5 and 10 million distinct microbial species on Earth, with many more remaining to be discovered. * **Microbial roles**: Microorganisms play a range of roles in ecosystems, including decomposition, nutrient cycling, and primary production. * **Human microbiome**: The human microbiome is composed of trillions of microorganisms that live in and on the human body, influencing our health and well-being. * **Climate change**: Microorganisms play a key role in the global carbon cycle, influencing the Earth's climate and weather patterns. * **Biotechnology**: Microbial ecologists are developing new biotechnologies, such as biofuels and bioremediation, that harness the power of microorganisms to solve real-world problems. ## Significance Microbial ecology is a critical field of study that has far-reaching implications for our understanding of the natural world and our place within it. By studying microbial ecology, scientists can gain insights into the evolution of life on Earth, the functioning of ecosystems, and the impact of human activities on the environment. Microbial ecologists are also developing new biotechnologies that can help solve some of the world's most pressing problems, from climate change to disease. INFOBOX: - **Name:** Microbial Ecology - **Type:** Field of study - **Date:** 1960s (emergence of the field) - **Location:** Global (microorganisms are found everywhere on Earth) - **Known For:** Understanding the complex interactions between microorganisms and their environments TAGS: Microbial ecology, microbiology, ecology, evolution, biotechnology, climate change, human microbiome, microbial diversity.
PeopleLouis Pasteur
Louis Pasteur (1822-1895) was a French chemist and microbiologist who revolutionized medicine through his discovery of germ theory, development of pasteurization, and creation of life-saving vaccines for rabies and anthrax.
ScienceBiology Encyclopedia Entry 1775196667
** This entry is about the fundamental principles and processes governing living organisms, encompassing the study of life's intricate mechanisms, from molecular interactions to ecosystems. ## Overview Biology is the scientific study of life and living organisms, encompassing the intricate mechanisms that govern life's processes. It is an interdisciplinary field that draws from chemistry, physics, mathematics, and earth sciences to understand the complex interactions within and between living systems. Biologists investigate the structure, function, growth, evolution, distribution, and taxonomy of all living things, from the simplest bacteria to complex ecosystems. Biology encompasses various subfields, including cellular biology, genetics, ecology, evolution, botany, zoology, and microbiology. Each of these subfields provides a unique perspective on the intricate mechanisms governing life. For instance, cellular biology focuses on the structure and function of cells, the basic building blocks of life, while genetics explores the mechanisms of heredity and variation. ## History/Background The study of biology dates back to ancient civilizations, with early philosophers such as Aristotle and Epicurus contributing to our understanding of living organisms. However, it wasn't until the 17th century that biology began to take shape as a distinct scientific discipline. The work of Antonie van Leeuwenhoek, a Dutch tradesman and amateur scientist, laid the foundation for modern biology by discovering microorganisms using a microscope. The 19th century saw significant advances in biology, particularly with the discovery of the cell theory by Matthias Jakob Schleiden and Theodor Schwann. This theory posits that all living organisms are composed of cells, which are the basic units of life. The development of the theory of evolution by natural selection by Charles Darwin in 1859 revolutionized our understanding of life's diversity and complexity. ## Key Information Some of the most significant facts and achievements in biology include: * **Cell theory**: The discovery that all living organisms are composed of cells, which are the basic units of life. * **DNA structure**: The discovery of the double helix structure of DNA by James Watson and Francis Crick in 1953. * **Evolution**: The theory of evolution by natural selection, which explains the diversity and complexity of life on Earth. * **Photosynthesis**: The process by which plants, algae, and some bacteria convert light energy into chemical energy. * **Mitosis**: The process of cell division that results in the production of two daughter cells with the same number of chromosomes as the parent cell. ## Significance Biology has far-reaching implications for various fields, including medicine, agriculture, conservation, and environmental science. Understanding the intricate mechanisms governing life has led to numerous breakthroughs in medicine, such as the development of vaccines and antibiotics. Biology also informs our understanding of the natural world, enabling us to manage ecosystems, conserve biodiversity, and mitigate the impacts of climate change. INFOBOX: - Name: Biology - Type: Scientific discipline - Date: Ancient civilizations to present day - Location: Global - Known For: Understanding the mechanisms governing life and living organisms TAGS: biology, life sciences, cell biology, genetics, ecology, evolution, botany, zoology, microbiology
ScienceBiology Encyclopedia Entry 1776189904
The **Biology Encyclopedia Entry 1776189904** is a comprehensive online resource that provides in-depth information on various biological topics, ranging from **cell biology** to **ecology**, and is designed to cater to the needs of students, researchers, and enthusiasts alike.
ScienceBiology Encyclopedia Entry 1777187345
** Biology is the natural science that studies living organisms and their interactions with the environment, encompassing the structure, function, growth, evolution, distribution, and taxonomy of all living things. ## Overview Biology is a vast and diverse field that seeks to understand the intricacies of life on Earth and beyond. From the molecular mechanisms of cellular respiration to the complex ecosystems of entire ecosystems, biology encompasses a wide range of disciplines, including botany, zoology, microbiology, ecology, and genetics. The study of biology has led to numerous breakthroughs in medicine, agriculture, conservation, and our understanding of the natural world. Biology is an interdisciplinary field that draws on concepts and methods from chemistry, physics, mathematics, and computer science. Biologists use a variety of techniques, including experimentation, observation, and modeling, to investigate the behavior of living organisms and the interactions between organisms and their environment. The field of biology is constantly evolving, with new discoveries and advances in technology leading to a deeper understanding of the complex and dynamic nature of life. From the simplest bacteria to the most complex ecosystems, biology seeks to understand the intricate web of relationships between living organisms and their environment. By studying the structure and function of living things, biologists can gain insights into the fundamental principles of life and the processes that shape the natural world. ## History/Background The study of biology dates back to ancient civilizations, with early philosophers and scientists such as Aristotle and Galen making significant contributions to our understanding of living organisms. However, it wasn't until the 19th century that biology emerged as a distinct scientific discipline. The discovery of the cell by Antonie van Leeuwenhoek in 1676 and the development of the theory of evolution by Charles Darwin in 1859 marked significant milestones in the history of biology. In the 20th century, the discovery of DNA structure and function by James Watson and Francis Crick in 1953 revolutionized our understanding of genetics and the molecular basis of life. The development of molecular biology, genomics, and biotechnology has continued to advance our knowledge of living organisms and their interactions with the environment. ## Key Information Some of the key areas of study in biology include: * **Cell biology**: The study of the structure and function of cells, including their components, processes, and interactions. * **Genetics**: The study of heredity and variation, including the structure and function of DNA and the mechanisms of inheritance. * **Evolutionary biology**: The study of the processes that have shaped the diversity of life on Earth, including speciation, adaptation, and extinction. * **Ecology**: The study of the interactions between living organisms and their environment, including the relationships between organisms and their physical and biological surroundings. * **Microbiology**: The study of microorganisms, including bacteria, viruses, and other microscopic life forms. Some of the key concepts in biology include: * **Homeostasis**: The ability of living organisms to maintain a stable internal environment despite changes in the external environment. * **Adaptation**: The process by which living organisms adjust to their environment through changes in behavior, physiology, or morphology. * **Natural selection**: The process by which living organisms with favorable traits are more likely to survive and reproduce, leading to the evolution of new species. ## Significance The study of biology has numerous practical applications and significant implications for our understanding of the natural world. Some of the key areas where biology has had a significant impact include: * **Medicine**: The study of biology has led to numerous breakthroughs in medicine, including the development of vaccines, antibiotics, and other treatments for diseases. * **Agriculture**: The study of biology has improved crop yields, disease resistance, and pest management, leading to increased food security and sustainability. * **Conservation**: The study of biology has informed our understanding of the impact of human activities on the environment and has led to efforts to protect and preserve biodiversity. * **Environmental science**: The study of biology has helped us understand the complex relationships between living organisms and their environment, leading to a deeper appreciation of the natural world and our place within it. INFOBOX: - Name: Biology - Type: Natural science - Date: Ancient civilizations (e.g. Aristotle, 384-322 BCE) - Location: Global - Known For: Understanding the structure, function, growth, evolution, distribution, and taxonomy of all living things TAGS: biology, natural science, cell biology, genetics, evolutionary biology, ecology, microbiology, homeostasis, adaptation, natural selection, medicine, agriculture, conservation, environmental science
ScienceBiology Encyclopedia Entry 1777398786
** Biology is the natural science that studies living organisms and their interactions with the environment, encompassing the study of structure, function, growth, evolution, distribution, and taxonomy of all living things. **CONTENT:** ### Overview Biology is a vast and diverse field that seeks to understand the intricacies of life on Earth. It encompasses various disciplines, including botany, zoology, microbiology, ecology, and genetics, among others. Biologists investigate the fundamental principles governing the behavior of living organisms, from the molecular mechanisms of cellular processes to the complex interactions within ecosystems. By exploring the intricacies of life, biologists aim to unravel the mysteries of the natural world, develop innovative solutions to pressing environmental and health challenges, and advance our understanding of the intricate web of life. Biology is a dynamic and rapidly evolving field, driven by technological advancements, new discoveries, and the increasing awareness of the importance of preserving the natural world. Biologists employ a range of techniques, including experimentation, observation, and modeling, to study the intricate relationships between living organisms and their environments. From the molecular machinery of cells to the complex interactions within ecosystems, biologists seek to understand the intricate mechanisms governing life on Earth. The study of biology has far-reaching implications for various fields, including medicine, agriculture, conservation, and environmental science. By understanding the intricacies of life, biologists can develop innovative solutions to pressing challenges, such as disease prevention, sustainable food production, and ecosystem conservation. ### History/Background The study of biology dates back to ancient civilizations, with early philosophers and scientists such as Aristotle and Galen contributing to our understanding of living organisms. However, it wasn't until the 19th century that biology emerged as a distinct scientific discipline. The discovery of the cell by Antonie van Leeuwenhoek in 1676 marked a significant turning point in the history of biology, as it laid the foundation for the development of modern cell theory. The 20th century saw significant advancements in biology, including the discovery of DNA structure by James Watson and Francis Crick in 1953, which revolutionized our understanding of genetics and molecular biology. The development of recombinant DNA technology in the 1970s enabled biologists to manipulate genetic material, leading to significant breakthroughs in fields such as genetic engineering and biotechnology. ### Key Information - **Cell theory**: The fundamental principle that all living organisms are composed of cells, which are the basic units of life. - **Evolution**: The process by which living organisms change over time through the accumulation of genetic mutations and adaptations. - **Genetics**: The study of heredity and variation, which underlies the diversity of life on Earth. - **Ecology**: The study of the relationships between living organisms and their environments. - **Microbiology**: The study of microorganisms, including bacteria, viruses, and other microscopic life forms. - **Botany**: The study of plants, including their structure, function, growth, and evolution. - **Zoology**: The study of animals, including their structure, function, growth, and evolution. ### Significance Biology has far-reaching implications for various fields, including medicine, agriculture, conservation, and environmental science. By understanding the intricacies of life, biologists can develop innovative solutions to pressing challenges, such as disease prevention, sustainable food production, and ecosystem conservation. The study of biology has also led to significant breakthroughs in fields such as genetic engineering, biotechnology, and regenerative medicine. Biologists have developed novel therapies for diseases, such as gene therapy and stem cell therapy, which hold promise for treating a range of conditions. **INFOBOX:** - **Name:** Biology - **Type:** Natural science - **Date:** Ancient civilizations (e.g., Aristotle, 384-322 BCE) - **Location:** Global - **Known For:** Understanding the intricacies of life, developing innovative solutions to pressing challenges **TAGS:** Biology, natural science, cell theory, evolution, genetics, ecology, microbiology, botany, zoology, medicine, agriculture, conservation, environmental science, genetic engineering, biotechnology, regenerative medicine.
ScienceBiology Encyclopedia Entry 1776804066
** Biology is the natural science that studies living organisms and their interactions with the environment, encompassing the study of structure, function, growth, evolution, distribution, and taxonomy of all living things. **CONTENT:** ### Overview Biology is a vast and diverse field of study that seeks to understand the intricacies of life on Earth. It encompasses various disciplines, including botany, zoology, microbiology, ecology, genetics, and biochemistry, among others. Biologists examine the structure and function of living organisms, from the molecular level to entire ecosystems. This field has led to numerous groundbreaking discoveries and innovations, transforming our understanding of the natural world and our place within it. Biology is a dynamic and constantly evolving field, with new discoveries and advancements being made regularly. The study of biology has led to significant improvements in human health, agriculture, and environmental conservation. Biologists have made tremendous progress in understanding the mechanisms of life, from the genetic code to the complex interactions within ecosystems. The field of biology has a rich history, dating back to ancient civilizations. However, it wasn't until the 19th century that biology began to take shape as a distinct scientific discipline. The discovery of cells by Antonie van Leeuwenhoek in 1676 marked the beginning of the microscopic era in biology. Later, Charles Darwin's theory of evolution through natural selection revolutionized our understanding of the diversity of life on Earth. ### History/Background The study of biology has its roots in ancient civilizations, where people observed and described the natural world around them. The Greek philosopher Aristotle (384-322 BCE) is considered one of the earliest biologists, as he studied the structure and function of living organisms. However, it wasn't until the 19th century that biology began to take shape as a distinct scientific discipline. The discovery of cells by Antonie van Leeuwenhoek in 1676 marked the beginning of the microscopic era in biology. Later, the development of the microscope by Antonie van Leeuwenhoek and Robert Hooke enabled scientists to study the microscopic world, leading to a greater understanding of the structure and function of living organisms. The 19th century saw the rise of modern biology, with the discovery of the cell theory by Matthias Jakob Schleiden and Theodor Schwann in 1838. This theory posited that all living organisms are composed of cells, which are the basic units of life. Later, Charles Darwin's theory of evolution through natural selection (1859) revolutionized our understanding of the diversity of life on Earth. ### Key Information * **Cell Theory**: The cell theory, developed by Matthias Jakob Schleiden and Theodor Schwann in 1838, posits that all living organisms are composed of cells, which are the basic units of life. * **Evolution**: Charles Darwin's theory of evolution through natural selection (1859) revolutionized our understanding of the diversity of life on Earth. * **Microbiology**: The discovery of microorganisms by Antonie van Leeuwenhoek in 1676 marked the beginning of the microscopic era in biology. * **Genetics**: The discovery of DNA structure by James Watson and Francis Crick in 1953 revealed the genetic code and paved the way for modern genetics. * **Ecology**: The study of ecosystems and the interactions between living organisms and their environment has led to a greater understanding of the natural world. ### Significance Biology has had a profound impact on human society, leading to significant improvements in human health, agriculture, and environmental conservation. Biologists have made tremendous progress in understanding the mechanisms of life, from the genetic code to the complex interactions within ecosystems. The study of biology has led to numerous groundbreaking discoveries and innovations, transforming our understanding of the natural world and our place within it. Biologists have developed new treatments for diseases, improved crop yields, and developed sustainable practices for environmental conservation. **INFOBOX:** - **Name:** Biology - **Type:** Natural science - **Date:** 19th century - **Location:** Global - **Known For:** Understanding the structure and function of living organisms, evolution, genetics, and ecology **TAGS:** biology, natural science, cell theory, evolution, genetics, ecology, microbiology, biochemistry, botany, zoology, agriculture, environmental conservation, human health.