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
Polar amino acids are all except ? 
Select and explain. 
A. Glutamic acid, B. Histidine, C. Glutamine, D. Methionine
D: Methionine
Answer: D: Methionine 
Explanation: Ans. is 'd' i.e., Methionine