How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to `CO_2` and `H_2O` yield 686 kcal and useful chemical energy available in high energy phosphate bond of one mole of ATP is 12 kcal?

Options

A. 1
B. 2
C. 30
D. 57

Answer

D

Explanation

12 kcal produces -1 ATP
1 kcal produces — 1/12 ATP
686 kcal produces - `686 xx 1/12 = 57` ATP