Question

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO₂ and H₂O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal ?

(a) 30

(b) 57

(c) 1

(d) 2

Answer 1

Correct option (b) 57

Explanation:

One mole of ATP liberates 12 kcal of energy. so 686 kcal will be liberated by 686 / 12 = 57.1 ATP molecules.