This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
All the following coenzymes paicipate in the transfer of hydrogen and electrons, Except 
Select and explain. 
A. FAD, B. PLP, C. NAD+, D. NADP+
B: PLP
Answer: B: PLP 
Explanation: "Most of the energy liberated during the oxidation of carbohydrate, fatty acids, and amino acids is made available within mitochondria as reducing equivalents ('H or electrons)" - electron transpo chainPyridoxal phosphate (PLP) is a coenzyme in transamination reactions.Ref: Harper 30th edition pg: 127