Aerobic Cellular Respiration: Krebs Cycle and Electron Transport Chain

Vocabulary terms and key products covering the regeneration of oxaloacetate in the Krebs cycle and entry into the Electron Transport Chain (ETC).

Malate

The molecule that reduces $NAD^+$ to produce NADH, regenerating oxaloacetate to restart the Krebs cycle.

Oxaloacetate

The original "acceptor" molecule of the Krebs cycle that is regenerated by malate and unites with acetyl-CoA to start the cycle again.

Acetyl-CoA

The molecule that unites with the acceptor molecule oxaloacetate to initiate the Krebs cycle again.

Products per Pyruvate Molecule

The metabolic yield produced per pyruvate molecule, consisting of 3 $CO_2$, 1 ATP, 4 NADH, and 1 H2.

Products per Glucose Molecule

The metabolic yield produced per glucose molecule, consisting of 6 $CO_2$, 2 ATP, 8 NADH, and 2 H2.

Albert Szent-Gyorgi

The scientist quoted as stating, "Life is nothing but an electron looking for a place to rest."

Electron Transport Chain (ETC)

The highly organized transport system in the 3rd stage of energy production where electron carriers give up their electrons.