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 is seen in the conversion of: 
Select and explain. 
A. Acetoacetate to a-keto glutarate, B. Succinyl CoA to Succinate, C. Fumarate to malate, D. Succinate to fumarate
B: Succinyl CoA to Succinate
Answer: B: Succinyl CoA to Succinate 
Explanation: B i.e. Succinyl CoA to succinate