Glossary of terms used on this site
Glossary of biology.
Glossaries
Term | Main definition |
---|---|
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 |
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 |
uniporter | Glossaries - Biology glossary |
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 |
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 |