The Living World 8th Edition by George Johnson

تمرين 5

Cells can extract energy from foodstuffs other than glucose because
A) proteins, fatty acids, and nucleic acids get converted to glucose and then enter oxidative respiration.
B) each type of macromolecule has its own oxidative respiration pathway.
C) each type of macromolecule is broken down into its subunits, which enter the oxidative respiration pathway.
D) they can all enter the glycolytic pathway.
Your friend wants to go on a low-carbohydrate diet so that he can lose some of the "baby fat" he's still carrying. He asks your advice; what do you tell him?
Which of the following food molecules would generate the most ATP molecules, assuming that glycolysis, the Krebs cycle, and the electron transport chain were all functioning and that the foods were consumed in equal amounts: carbohydrates, proteins, or fats? Explain your answer.