Question

Energy released per gram would be

• A. Highest when Wheat starch is respiratory substrate
• B. Highest when Potato starch is respiratory substrate
• C. Highest when Rice starch is respiratory substrate
• D. Same in all the cases

Answer 1

The correct option is D Same in all the cases

Wheat, potato and rice all are rich in carbohydrate e.g., starch and thus the energy released per gram in all the cases will be same. The energy released per gram by a respiratory substrate is known as its physiologic value and the physiologic value of starch is 4.0 kcal/g.

Thus, the correct answer is option D.