Question

multiple choice (choose the best answer) 1. which of the following best describes a lipid? a. hydrophilic molecule that dissolves in water b. hydrophobic molecule used for long - term energy storage c. molecule made of amino acids that builds proteins d. short - term energy source found in sugars

Explanation:

• Option A: Lipids are hydrophobic, not hydrophilic, so A is wrong.
• Option B: Lipids are hydrophobic (water - fearing) and are used for long - term energy storage (e.g., fats in the body store energy for long periods), this matches the properties of lipids.
• Option C: Molecules made of amino acids that build proteins are proteins themselves, not lipids, so C is wrong.
• Option D: Short - term energy sources found in sugars are carbohydrates, not lipids, so D is wrong.

Answer:

B. Hydrophobic molecule used for long - term energy storage