Error
  • The template for this display is not available. Please contact a Site administrator.

Glossary of terms used on this site

Glossary of biology.

Search for glossary terms (regular expression allowed)

Glossaries

Term Main definition
acclimatization
Glossaries - Biology glossary

alteration in a body system in response to environmental change

acellular
Glossaries - Biology glossary

lacking cells

acetyl CoA
Glossaries - Biology glossary

combination of an acetyl group derived from pyruvic acid and coenzyme A, which is made from pantothenic acid (a B-group vitamin)

acetylcholine
Glossaries - Biology glossary

neurotransmitter released by neurons in the central nervous system and peripheral nervous system

acetylcholinesterase
Glossaries - Biology glossary

(AChE) enzyme that breaks down ACh into acetyl and choline

acid
Glossaries - Biology glossary

molecule that donates hydrogen ions and increases the concentration of hydrogen ions in a solution

acid rain
Glossaries - Biology glossary

corrosive rain caused by rainwater falling to the ground through sulfur dioxide gas, turning it into weak sulfuric acid; can damage structures and ecosystems

acidophile
Glossaries - Biology glossary

organism with optimal growth pH of three or below

acoelomate
Glossaries - Biology glossary

animal without a body cavity

acoelomate
Glossaries - Biology glossary

animal without a body cavity

acromegaly
Glossaries - Biology glossary

condition caused by overproduction of GH in adults

acrosomal reaction
Glossaries - Biology glossary

series of biochemical reactions that the sperm uses to break through the zona pellucida

actin
Glossaries - Biology glossary

globular contractile protein that interacts with myosin for muscle contraction

Actinopterygii
Glossaries - Biology glossary

ray-finned fishes

action potential
Glossaries - Biology glossary

self-propagating momentary change in the electrical potential of a neuron (or muscle) membrane