Citric Acid Cycle in AP Biology

Definition

Also known as the Krebs cycle or TCA cycle, this is a series of chemical reactions that generates energy through the oxidation of acetyl-CoA into carbon dioxide.

Related terms

Acetyl CoA:

This molecule acts like fuel for the citric acid cycle. It's derived from carbohydrates, fats, and proteins.

NADH and FADH2: These are coenzymes that act like batteries, storing energy during certain stages of the citric acid cycle. They're later used in another process called oxidative phosphorylation to generate even more ATP.

Oxidative Phosphorylation: This is the final stage in cellular respiration where most ATP is produced. It relies on products from the citric acid cycle (NADH and FADH2).