You are presented with the question "These are a type of protein that provides cellular energy in the human body:" and the following answer choices: 
- health
 - pituitary
 - coiled
 - Proteins
 - unique
 - growth
 - enzymes
 - complexity

Now knowing that protein is used to repair cells by the human body and enzymes provide cellular energy, repair tissue organs and cells, choose the best answer.


 

       enzymes  