LIFE 102 Lecture Notes - Lecture 14: Citric Acid Cycle, Succinyl-Coa, Acetyl-Coa
Document Summary
Breaks down glucose into two molecules of pyruvate. Occurs in the cytoplasm and has two major phases. Put in 2 atp and get 4 atp and 2 nadh. Net total of 2 atp and 2 nadh. *the citric acid cycle completes the energy-yielding oxidation of organic molecules. In the presence of oxygen, pyruvate enters the mitochondrion. Before the citric acid cycle can begin, pyruvate must be converted to acetyl coa, which links glycolysis to the citric acid cycle. Generates 1 atp, 3 nadh, and 1 fadh2 per turn. *following glycolysis and the citric acid cycle, nadh and fadh2 account for most of the energy extracted from food. *nadh and fadh2 donate electrons to the electron transport chain. Electrons drop in free energy as they go down the chain from protein to protein and are finally passed to oxygen, forming water. Electrons are transferred from nadh or fadh2 to the electron transport chain.
