Biology CLEP Prep Practice Exam

What is the job of amino acids and proteins in the cell?

1. To store energy

2. To break down food

3. To synthesize molecules

4. To create energy

The correct answer is: To synthesize molecules

Amino acids and proteins serve as the building blocks and catalysts for the creation of molecules in the cell. This includes the synthesis of enzymes, hormones, and other important molecules that are essential for cellular functions. Option A is incorrect because the main function of amino acids and proteins is not to store energy, but rather to facilitate the creation of other molecules. Option B is incorrect because the breaking down of food is primarily carried out by enzymes, which are produced by the synthesis of proteins. Option D is incorrect because creating energy is not the main role of amino acids and proteins, though they do play a role in energy metabolism.