Glossary of terms used on this site
Glossary of biology.
Glossaries
Term | Main definition |
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ubiquinone |
Glossaries - Biology glossary
soluble electron transporter in the electron transport chain that connects the first or second complex to the third |
ulna |
Glossaries - Biology glossary
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ultrasound |
Glossaries - Biology glossary
sound frequencies above the human detectable ceiling of approximately 20,000 Hz |
umami |
Glossaries - Biology glossary
one of the five basic tastes, which is described as “savory” and which may be largely the taste of Lglutamate |
unidirectional circulation |
Glossaries - Biology glossary
flow of blood in a single circuit; occurs in fish where the blood flows through the gills, then past the organs and the rest of the body, before returning to the heart |
unified cell theory |
Glossaries - Biology glossary
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uniporter |
Glossaries - Biology glossary
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uniramous |
Glossaries - Biology glossary
referring to one branch per appendage |
unsaturated fatty acid |
Glossaries - Biology glossary
long-chain hydrocarbon that has one or more double bonds in the hydrocarbon chain. |
untranslated region |
Glossaries - Biology glossary
segment of the RNA molecule that is not translated into protein. These regions lie before (upstream or 5') and after (downstream or 3') the protein-coding region |
up-regulation |
Glossaries - Biology glossary
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upstream |
Glossaries - Biology glossary
nucleotides preceding the initiation site; in general, sequences toward the 5' end relative to a site on the mRNA |
urea cycle |
Glossaries - Biology glossary
pathway by which ammonia is converted to urea |
ureotelic |
Glossaries - Biology glossary
describes animals that secrete urea as the primary nitrogenous waste material |
ureter |
Glossaries - Biology glossary
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