
Biology
Plant Physiology - Respiration Solutions
Metabolism: The citric acid cycle is frequently described as the major pathway of aerobic catabolism.
However, none of the reactions of the cycle directly involves oxygen as a reactant.
Why is the pathway considered oxygen-dependent?
Electrons from oxygen are used to reduce NAD+/FADH2,
O Glycolysis requires oxygen, and TCA follows glycolysis.
O Oxygen is used to reduce pyruvate in PDH.
O TCA is followed by ETC, which requires 02.