Biochemistry Thiamine deficiency causes decreased energy production because A It is required for the process of transamination B It is co-fact or for oxidative reduction C It is co-enzyme for transketolase in pentose phosphate pathway D It is co-enzyme for pyruvate dehydrogenase and a- ketoglutarate dehydrogenase in Tricarboxylic acid pathway π‘ Explanation Thiamine deficiency causes decreased energy production because β Correct Answer: D. It is co-enzyme for pyruvate dehydrogenase and a- ketoglutarate dehydrogenase in Tricarboxylic acid pathway