Cellular respiration is the controlled release of energy from organic compounds like glucose to form ATP. There are two types of cellular respiration: aerobic respiration, which uses oxygen, and anaerobic respiration, which does not. Glycolysis is the first step, in which glucose is broken down into pyruvate and a small amount of ATP is produced. In aerobic respiration, pyruvate then enters the Krebs cycle in the mitochondria to produce more ATP through oxidation. The electron transport chain uses protons to power ATP synthase and produce most of the ATP through chemiosmosis.

1. By Eric Savoie, Christian Bonzheim, Nick Aguayo, and Michael Arkwright

12. Krebs Cycle

15. Aerobic Respiration- Chemiosmosis

16. Chemiosmosis

18. Overview