Question

which statement best explains how lysosomes contribute to the cycling of nutrients through a cell?

a. they acquire food materials from the cell’s environment.

b. they turn light energy into food energy.

c. they break down food materials into forms the cell can use.

d. they transport food materials to the cell parts that need them.

Explanation:

To solve this, we analyze each option:

• Option A: Lysosomes don't acquire food from the environment; structures like endocytosis - related vesicles or cell membrane transporters do. So A is wrong.
• Option B: Converting light energy to food energy is done by chloroplasts in photosynthetic cells, not lysosomes. So B is wrong.
• Option C: Lysosomes contain hydrolytic enzymes that break down macromolecules (food materials) into smaller, usable forms for the cell, which helps in nutrient cycling. This matches the function of lysosomes.
• Option D: Transporting food materials to cell parts is done by vesicles or cytoskeletal - based transport mechanisms, not lysosomes. So D is wrong.

Answer:

C. They break down food materials into forms the cell can use.