Question

List 3 macromolecular sources for acetyl CoA that can be used in the Krebs Cycle. Which of the macromolecular sources produces more ATP per molecule and briefly state why.

Answer 1

The macromolecular sources of Acetyl CoA are carbohydrates ,proteins and fats.

Fats produces more ATP per molecule as compared to glucose and proteins.Because Fatty acids produces 3 Acetyl CoA molecules per 6 carbon atoms.But glucose produces only 2 Acetyl CoA molecules per 6 carbon atoms.so fat molecules yield more energy than carbohydrates.So they are important source of energy.