Glossary of terms used on this site

Glossary of biology.

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Glossaries

Term Main definition
T cell
Glossaries - Biology glossary

lymphocyte that matures in the thymus gland; one of the main cells involved in the adaptive immune system

Tachyglossidae
Glossaries - Biology glossary

clade that includes the echidna or spiny anteater

tadpole
Glossaries - Biology glossary

larval stage of a frog

tap root system
Glossaries - Biology glossary

type of root system with a main root that grows vertically with few lateral roots; found in dicots

target cell
Glossaries - Biology glossary

cell that has a receptor for a signal or ligand from a signaling cell

tarsal
Glossaries - Biology glossary

one of the seven bones of the ankle

tastant
Glossaries - Biology glossary

food molecule that stimulates gustatory receptors

taste bud
Glossaries - Biology glossary

clusters of taste cells

TATA box
Glossaries - Biology glossary

conserved promoter sequence in eukaryotes and prokaryotes that helps to establish the initiation site for transcription

taxis
Glossaries - Biology glossary

directed movement in response to a stimulus

TCA cycle
Glossaries - Biology glossary

(also citric acid cycle) alternate name for the citric acid cycle, named after the group name for citric acid, tricarboxylic acid (TCA); see citric acid cycle

tegmen
Glossaries - Biology glossary

inner layer of the seed coat

teichoic acid
Glossaries - Biology glossary

polymer associated with the cell wall of Gram-positive bacteria

telomerase
Glossaries - Biology glossary

enzyme that contains a catalytic part and an inbuilt RNA template; it functions to maintain telomeres at chromosome ends

telomere
Glossaries - Biology glossary

DNA at the end of linear chromosomes

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