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

Fact 2: Biomolecules, such as proteins, are composed of one or many chains folded into compact forms.

Given the two facts above, answer the question "are used to repair cells by the human body" with the following options: 
- prolactin release
 - Biomolecules
 - food and shelter
 - pituitary
 - exoskeleton
 - energy
 - Enzymes
 - arteries


 

  Biomolecules       