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
[{'content': 'Substrate level phosphorylation in glycolysis is catalyzed by \nSelect and explain. \nA. Glyceraldehyde 3 phosphate dehydrogenase, B. Pyruvate kinase, C. Phosphofructokinase, D. Enolase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In the reaction, catalyzed by phosphoglycerate kinase, phosphate is transferred from 1,3-bisphosphoglycerate onto ADP, forming ATP (substrate-level phosphorylation) and 3-phosphoglycerate. The phosphate of phosphoenolpyruvate is transferred to ADP in another substrate-level phosphorylation catalyzed by pyruvate kinase to form two molecules of ATP per molecule of glucose oxidized. Reference: Harper; 30th edition; Page no: 171', 'role': 'assistant'}]