Arsenite inhibits: (A) Enolase, (B) G-6-PD, (C) Alpha ketoglutarate dehydrogenase, (D) Hexokinase
Answer is C. Alpha ketoglutarate dehydrogenase (alpha ketoglutarate to succinyl CoA) is inhibited by Arsenite. This is a non-competitive inhibition. Ref: DM VASUDEVAN TEXTBOOK OF BIOCHEMISTRY, SIXTH EDITION,PG.NO.,222.