Fact 1: Protein is used to repair cells by the human body.

Fact 2: Amino acids form protein.

Given the two facts above, answer the question "What does the human body use to repair cells?" with the following options: 
- layers of fat
 - Enzymes
 - exercise
 - barrel-shaped
 - sweating
 - Amino Acids
 - energy
 - exoskeleton


 

      Amino Acids   