This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Carbohydrates, Subject name: Biochemistry
[{'content': 'Name the enzyme which catalyses substrate level phosphorylation in glycolysis - \nSelect and explain. \nA. Glyceraldehyde 3 phosphate dehydrogenase, B. Enolase, C. Pyruvate kinase, D. Phosphofuctokinase I', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Pyruvate kinase* In substrate level phosphorylation, at the level of substrate itself energy that is liberated is trapped in the form of ATP. To make it simple, in a chemical freaction, if a substrate is converted into products and simultaneously, ADP is converted into ATP, it is considered as substrate level phosphorylation. There are four substrate level phosphorylation steps in human metabolism", 'role': 'assistant'}]