Lipids store double amount of energy as compared to carbohydrates because of:
Correct answer: D. High proportion of C-H bonds
- A. High proportion of oxygen
- B. Low proportion of carbon
- C. Lower proportion of C-H bonds
- D. High proportion of C-H bonds
Explanation
Option D is correct. Lipids store more energy than carbohydrates primarily because they have a higher proportion of carbon-hydrogen (C-H) bonds. These bonds are strong and release a large amount of energy when broken, which accounts for the higher energy content of lipids. In contrast, carbohydrates have more oxygen-hydrogen bonds, which release less energy. Option A is incorrect because lipids have a lower proportion of oxygen, not higher. Option B is incorrect because lipids have a high proportion of carbon. Option C is incorrect as lipids have more C-H bonds, not fewer.
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