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
The rate- limiting enzyme in glycolysis is- 
Select and explain. 
A. a) Phosphofructokinase, B. b) Glucose 6- dehydrogenase, C. c) Glucokinase, D. d) Pyruvate kinase
A: a) Phosphofructokinase
Answer: A: a) Phosphofructokinase 
Explanation: Regulatory steps of Glycolysis are- - Hexokinase/ Glucokinase - Phosphofructokinase - Pyruvate kinase