Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins

Options

A. Glucose-6-phosphate
B. Fructose 1,6-bisphosphate
C. Pyruvic acid
D. Acetyl Co-A

Answer

D

Explanation

Carbohydrates, fats and proteins , all can be used as a substrate in cellular respiration. All of them first get converted to acetyl Co-A to enter into Krebs' cycle of aerobic cellular respiration. Thus, it is the common factor of respiration entering Krebs' cycle after breakdown of carbohydrates, fats and proteins.