Question

__________ is completely oxidised during TCA cycle.

• A. Glucose
• B. Ethanol
• C. Acetyl-CoA
• D. Citric acid

Answer 1

The correct option is C Acetyl-CoA

During aerobic repsiration glucose enters glycolysis and pyruvate is the end product. The pyruvate is converted to acetyl-co-A to enter the TCA cycle. The acetyl part of acetyl-CoA is completely oxidised and carbon dioxide, water, ${\mathrm{NADH}}_2$ and ${\mathrm{FADH}}_2$ are produced.