Oxidative Phosphorylation and Substrate-Level Phosphorylation

Citric Acid Cycle and Acetyl CoA Inputs

• Two terms/turns of the cycle occur for one molecule.

• Two acetyl CoA molecules are utilized to generate Cyclin.

Mechanisms of ATP Production

• Substrate-Level Phosphorylation:

  • Generates ATP directly with the assistance of an enzyme.

  • Differs fundamentally in mechanism from oxidative phosphorylation.

• Oxidative Phosphorylation:

  • Refers to the metabolic process of ATP synthesis contrasted against substrate-level phosphorylation.