This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
Naf inhibits 
Select and explain. 
A. Enolase, B. Glucokinase, C. Hexokinase, D. G-6 PD
A: Enolase
Answer: A: Enolase 
Explanation: Enolase requires Mg2++, and by removing magnesium ions, fluoride will irreversibly inhibit this enzyme. Thus fluoride will stop the whole glycolysis.Ref: DM Vasudevan, 7th edition, page no: 111