| A | B |
|---|
| glucose | the source of most of the energy in the cell |
| ATP | a molecule that stores energy in a high-energy phosphate bond |
| Electron carriers | molecules that transfer electrons from one substance to another |
| NAD+ and FAD | electron carriers involved in cell respiration |
| anaerobic respiration | cellular respiration in the absence of oxygen |
| aerobic respiration | cellular respiration in the presence of oxygen |
| mitochondria | organelle that is the site of cellular respiration |
| oxidation-reduction reaction | reaction in which electrons are gained by one substance and lost by another |
| oxidation | the loss of electrons |
| reduction | the gain of electrons |
| glycolysis | splitting glucose into 2 pyruvic acid molecules |
| fermentation | the breakdown of pyruvic acid |
| alcoholic fermentation | produces alcohol and carbon dioxide |
| lactic acid fermentation | produces lactic acid |
| number of ATP made by anaerobic respiration | 2 ATP |
| Acetyl CoA | made from pyruvic acid before Krebs cycle |
| Krebs cycle | breaks acetyl CoA into carbon dioxide |
| number of ATP made by Krebs cycle | 2 ATP |
| electron transport chain (ETC) | movement of electrons by NADH, FADH2 |
| number of ATP made by electron transport chain | 32 ATP |
| oxygen | final electron acceptor in ETC |
| number of ATP made by aerobic resp. | 36 ATP |
