Questions: Question 10 Which organic compound has the primary function of energy storage? (A) Nucleic acids (B) Carbohydrates (C) Proteins (D) Lipids

The answer is (D): Lipids.

Explanation for each option: (A) Nucleic acids: Nucleic acids, such as DNA and RNA, are primarily involved in the storage and transmission of genetic information, not energy storage. (B) Carbohydrates: Carbohydrates are indeed used for energy, but they are primarily used for short-term energy storage and quick energy release rather than long-term energy storage. (C) Proteins: Proteins serve a variety of functions including structural support, catalyzing biochemical reactions (enzymes), and acting as signaling molecules. They are not primarily used for energy storage. (D) Lipids: Lipids, such as fats and oils, are the primary organic compounds used for long-term energy storage. They store more energy per gram compared to carbohydrates and are used by organisms to store energy for extended periods.

Summary: Lipids are the primary organic compounds used for long-term energy storage in organisms.