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
Substrate-level phosphorylation seen in a reaction catalysed in 
Select and explain. 
A. Succinate dehydrogenase, B. Alpha-ketoglutarate dehydrogenase, C. Succinyl CoA thiokinase, D. Malate dehydrogenase
C: Succinyl CoA thiokinase
Answer: C: Succinyl CoA thiokinase 
Explanation: Substrate level phosphorylation is catalysed by : (i) In glycolysis: Phosphoglycerate kinase, pyruvate kinase; and (ii) In TCA cycle: Succinate thiokinase.