Biology Flashcards
The entry compound for the Krebs cycle in cellular respiration
Formed from a fragment of pyruvate attatched to a coenzyme
Acetyl coA
Common neurotransmitter
Binds to receptors and alters the permeability of the postsynaptic membrane by depolarizing or hyperpolarizing it
Acetylcholine
A solid bodied animal lacking a cavity between the gut and outer body wall
Acoelomate
Organelle which helps the sperm penetrate the egg
Acrosome
Rapid change in the membrane potential of a cell
Caused by the opening and closing of voltage triggered gates
Action potential
Movement of a substance across a biological membrane AGAINST its concentration or electrochemical gradient
Active transport
Containing/ requiring oxygen
Aerobic
Emergence of numerous species from a common ancestor introduced into a a new environment
Adaptive radiation
Behavior including some type of contest
Agnostic behavior
Alternate form of a gene
Allele
Speciation introduced because of geographical barriers
Allopatric speciation
Physiological adjustment to a change in an environmental factor
Acclimatization
