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Molecular biology / məˈlɛkjʊlər / is a branch of biology that seeks to understand the molecular basis of biological activity in and between cells, including biomolecular synthesis, modification, mechanisms, and interactions. [ 1][ 2][ 3] Though cells and other microscopic structures had been observed in living organisms as early as the ...
e. Enzymes ( / ˈɛnzaɪmz /) are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. Almost all metabolic processes in the cell need enzyme catalysis in order to occur at ...
For example, microorganisms or cells can be studied in artificial culture media, and proteins can be examined in solutions. Colloquially called "test-tube experiments", these studies in biology, medicine, and their subdisciplines are traditionally done in test tubes, flasks, Petri dishes, etc. [ 6 ] [ 7 ] They now involve the full range of ...
Genetic engineering. Recombinant DNA ( rDNA) molecules are DNA molecules formed by laboratory methods of genetic recombination (such as molecular cloning) that bring together genetic material from multiple sources, creating sequences that would not otherwise be found in the genome . Recombinant DNA is the general name for a piece of DNA that ...
Model organism. Escherichia coli is a gram-negative prokaryotic model organism. Drosophila melanogaster, one of the most famous subjects for genetics experiments. Saccharomyces cerevisiae, one of the most intensively studied eukaryotic model organisms in molecular and cell biology. A model organism (often shortened to model) is a non-human ...
Product (chemistry) The reaction products of the combustion of methane are carbon dioxide and water. Products are the species formed from chemical reactions. [1] During a chemical reaction, reactants are transformed into products after passing through a high energy transition state. This process results in the consumption of the reactants.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Proteomics is the large-scale study of proteins. [ 1][ 2] Proteins are vital macromolecules of all living organisms, with many functions such as the formation of structural fibers of muscle tissue, enzymatic digestion of food, or synthesis and replication of DNA. In addition, other kinds of proteins include antibodies that protect an organism ...
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