Biology glossary

Glossary of biology.

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Glossaries

Term Main definition
up-regulation
Glossaries - Biology glossary

an increase in the number of hormone receptors in response to increased hormone levels

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

urine-bearing tube coming out of the kidney; carries urine to the bladder

uric acid
Glossaries - Biology glossary

byproduct of ammonia metabolism in birds, insects, and reptiles

urinary bladder
Glossaries - Biology glossary

structure that the ureters empty the urine into; stores urine

urine
Glossaries - Biology glossary

filtrate produced by kidneys that gets excreted out of the body

Urochordata
Glossaries - Biology glossary

clade composed of tunicates

Urodela
Glossaries - Biology glossary
uterus
Glossaries - Biology glossary

environment for developing embryo and fetus

v
Glossaries - Biology glossary

small lipid globule

vaccine
Glossaries - Biology glossary

weakened solution of virus components, viruses, or other agents that produce an immune response

vacuole
Glossaries - Biology glossary

membrane-bound sac, somewhat larger than a vesicle, which functions in cellular storage and transport

vacuole
Glossaries - Biology glossary

membrane-bound sac, somewhat larger than a vesicle, which functions in cellular storage and transport

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