Question

_____ is the breakdown of molecules in the body.
anabolism
metabolism
exchange
synthesis
catabolism

Explanation:

Anabolism is the building - up of molecules. Metabolism is the sum of all chemical reactions in the body. Exchange is a general term not specific to molecule breakdown. Synthesis is the creation of molecules. Catabolism specifically refers to the breakdown of molecules in the body to release energy.

Answer:

E. Catabolism