This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proteins and Amino Acids, Subject name: Biochemistry
Creatinine is formed from: 
Select and explain. 
A. Arginine, B. Lysine, C. Leucine, D. Histamine
A: Arginine
Answer: A: Arginine 
Explanation: Ans. A. ArginineThree amino acids from which Creatine and creatinine is synthesized are:1. Glycine2. Arginine3. Methionine