| Term | Definition |
|
cellular respiration |
metabolic reactions that use energy from carbohydrate or fatty acid or amino acid oxidation to produce ATP molecules; includes fermentation and aerobic respiration |
|
fermentation |
the anaerobic breakdown of glucose that results in two ATP and products such as alcohol and lactate |
|
pyruvate |
the end product of glycolisis; its further fate, involving fermentation or entry into a mitochondrion, depends on oxygen availability |
|
glycolosis |
a pathway of metabolism converting glucose to pyruvate; resulting in a net gain of two ATP and two NADH molecules |
|
oxygen debt |
the use of oxygen to metabolize lactate, which builds up due to anaerobic conditions |
|
metabolic pool |
metabolites that are the products of and/or the substrates for key reactions in cells allowing one type of molecule to be change into another type, such as the conversion of carbohydrates to fats |
|
electron transport |
a type of system whereby electrons are passed along a series of carrier molecules, releasing energy for the synthesis of ATP |
|
aerobic |
type of process in which oxygen is required |
|
Acetyl-CoA |
a molecule made up of a two-carbon acetyl group attached to coenzyme A; the acetyl enzyme enters the Krebs cycle for further oxidation |
|
Krebs cycle |
a cycle of reactions in mitochondria that begins and ends with citric acid; produces CO2, ATP, NADH, and FADH2; also called the citric acid cycle |