Question

How many ATP moleucles could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to $C{O}_2$ and $H_{2}O$ yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?

• A. Two
• B. Thirty
• C. Fifty-seven
• D. One

Answer 1

The correct option is C Fifty-seven

Oxidation of one mole of glucose in to $C{O}_2$ and $H_{2}O$ releases 686 kcal of energy.
We know, 12 kcal of energy is present in one molecule of ATP.
So, total number of ATP which can store this energy is 686/12 = 57.1 or 57 ATP approimately.
Therefore, 57 ATP are generated from oxidation of one mole of glucose.