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
Glucose can be synthesised from all of the following, EXCEPT: 
Select and explain. 
A. Lactic acid, B. Aminoacid, C. Acetoacetate, D. Glycerol
C: Acetoacetate
Answer: C: Acetoacetate 
Explanation: Ketone body cannot synthesize glucose because the conversion of acetyl coA to pyruvate is irreversible. Glucose can be synthesised by Lactic acid, glycerol & gluconeogenic amino acid.