Module 4: The Life of Cells

Question 1

Describe the 4 stages of cellular respiration.

Answer 1

1. Glycolysis - glucose is broken down into pyruvate (x2), ATP & NADH.
2. Pyruvate processing - CO2 is released and Acetyl CoA (x2) is formed. More NADH is produced.
3. Citric acid cycle - Acetyl CoA is oxidized into CO2 (x2). More NADH & ATP is produced.
4. Electron transport & oxidative phosphorylation - ATP is released via an electron transport chain.