This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Non essential amino acids 
Select and explain. 
A. Are not components of tissue proteins, B. May be synthesized in the body from essential amino acids, C. Have no role in the metabolism, D. May be synthesized in the body in diseased states .
B: May be synthesized in the body from essential amino acids
Answer: B: May be synthesized in the body from essential amino acids 
Explanation: The remaining 10 amino acids are non-essential, because their carbon skeleton can be synthesized by the body.
Reference: Vasudevan 7th  ed, pg 27