Biology glossary

Glossary of biology.

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Glossaries

Term Main definition
triacylglycerol
Glossaries - Biology glossary

fat molecule; consists of three fatty acids linked to a glycerol molecule.

Synonyms - triglyceride
trichome
Glossaries - Biology glossary

hair-like structure on the epidermal surface

tricuspid valve
Glossaries - Biology glossary

one-way membranous flap of connective tissue between the atrium and the ventricle in the right side of the heart; also known as atrioventricular valve

triiodothyronine (T3)
Glossaries - Biology glossary

thyroid hormone containing 3 iodines that controls the basal metabolic rate

triploblast
Glossaries - Biology glossary

animal that develops from three germ layers

trisomy
Glossaries - Biology glossary

otherwise diploid genotype in which one entire chromosome duplicates

trochophore
Glossaries - Biology glossary

first of the two larval stages in mollusks

trophic level
Glossaries - Biology glossary

position of a species or group of species in a food chain or a food web

trophic level transfer efficiency (TLTE)
Glossaries - Biology glossary

energy transfer efficiency between two successive trophic levels

trophoblast
Glossaries - Biology glossary

outer layer of cells in the blastocyst

tropomyosin
Glossaries - Biology glossary

acts to block myosin binding sites on actin molecules, preventing cross-bridge formation and preventing contraction until a muscle receives a neuron signal

troponin
Glossaries - Biology glossary

binds to tropomyosin and helps to position it on the actin molecule, and also binds calcium ions

trp operon
Glossaries - Biology glossary

series of genes necessary to synthesize tryptophan in prokaryotic cells

trypsin
Glossaries - Biology glossary

pancreatic protease that breaks down protein

tryptophan
Glossaries - Biology glossary

amino acid that can be synthesized by prokaryotic cells when necessary

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