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
Which does not catalyzes irreversible in glycosis? 
Select and explain. 
A. a) Hexokinase, B. b) Phosphoglycerate kinase, C. c) Pyruvate kinase, D. d) Phosphofructokinase
B: b) Phosphoglycerate kinase
Answer: B: b) Phosphoglycerate kinase 
Explanation: Irreversible steps are catalyzed by- glucokinase, phosphofructokinase, pyruvate kinase.