Glossary of biology

This glossary of biology terms is a list of definitions about the fundamentals of biology, its sub-disciplines, and related fields.

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The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants

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A desmosome (/ˈdɛzməˌsoʊm/; "binding body"), also known as a macula adhaerens (plural: maculae adhaerentes) (Latin for adhering spot), is a cell structure specialized for cell-to-cell adhesion

DNA replication. The double helix is unwound and each strand acts as a template for the next strand. Bases are matched to synthesize the new partner strands. DNA replication is the process of producing two identical replicas from one original DNA molecule

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chemistry.tutorcircle.com An electron shell is the outside part of an atom around the atomic nucleus. It is a group of atomic orbitals with the same value of the principal quantum number n.

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(gang-lee-un) (gang-lee-ah) [Gk. ganglion, a swelling] A cluster (functional group) of nerve cell bodies in a centralized nervous system.

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JEJUNUM  : The midsection of the small intestine of many higher vertebrates like mammals, birds, reptiles is called as jejunum. It is present between the duodenum and the ileum.

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A lipoprotein is a biochemical assembly that contains both proteins and lipids, bound to the proteins, which allow fats to move through the water inside and outside cells. The proteins serve to emulsify the lipid molecules.

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Structure

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See also

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