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Glossary of terms used on this site

Glossary of biology.

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Glossaries

Term Main definition
activation energy
Glossaries - Biology glossary

energy necessary for reactions to occur

activator
Glossaries - Biology glossary

protein that binds to prokaryotic operators to increase transcription

active site
Glossaries - Biology glossary

enzyme's specific region to which the substrate binds

active transport
Glossaries - Biology glossary

method of transporting material that requires energy

acute disease
Glossaries - Biology glossary

disease where the symptoms rise and fall within a short period of time

adaptation
Glossaries - Biology glossary

heritable trait or behavior in an organism that aids in its survival and reproduction in its present environment

adaptive evolution
Glossaries - Biology glossary

increase in frequency of beneficial alleles and decrease in deleterious alleles due to selection

adaptive immunity
Glossaries - Biology glossary

immunity that has memory and occurs after exposure to an antigen either from a pathogen or a vaccination

adaptive radiation
Glossaries - Biology glossary

rapid branching through speciation of a phylogenetic tree into many closely related species

adaptive radiation
Glossaries - Biology glossary

speciation when one species radiates to form several other species

adaptive radiation
Glossaries - Biology glossary

rapid branching through speciation of a phylogenetic tree into many closely related species

Addison’s disease
Glossaries - Biology glossary

disorder caused by the hyposecretion of corticosteroids

adduction
Glossaries - Biology glossary

movement of the limbs inward after abduction

adenylate cyclase
Glossaries - Biology glossary

an enzyme that catalyzes the conversion of ATP to cyclic AMP

adhesion
Glossaries - Biology glossary

attraction between water molecules and other molecules