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
In starvation, nitrogen is carried from muscle to liver and kidney by: 
Select and explain. 
A. Alanine, B. Aspaic acid and Serine, C. Glycine, D. Asparagines
A: Alanine
Answer: A: Alanine 
Explanation: A i.e. AlanineIn starvation , alanine and glutamine are quantitatively the most impoant gluconeogenic aminoacidsQ. So alanine carries nitrogen from muscle to liver & kidney for fuher metabolism & energy production during starvation.