Question

Intermediate that is common to fatty acid and carbohydrate oxidation is:

• A. Pyruvate
• B. Acetyl CoA
• C. Fructose-1,6-bisphosphate
• D. DHAP

Answer 1

The correct option is B Acetyl CoA

Fatty acids would be broken down to acetyl CoA before entering the respiratory pathway when it is used as a substrate.
Glucose is the favoured substrate for respiration. All carbohydrates are usually first converted into glucose before they are used for respiration. Glucose would be broken down to acetyl CoA before entering the Kreb’s cycle when it is used as a substrate.