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
Deamination of the following amino acid occurs in liver 
Select and explain. 
A. Aspartate, B. Alanine, C. Glutamine, D. Glycine
C: Glutamine
Answer: C: Glutamine 
Explanation: Deamination of glutamine occurs in liver and ammonia is released, which is converted to urea.