Niacin and NAD/NADP — MCQs

A 45-year-old man presents with the following skin changes (as shown in the image). What relevant history should be taken to diagnose this condition?

A patient with hemolytic anemia has a defect in the enzyme glucose-6-phosphate dehydrogenase. Which of the following pathways is directly affected by this defect?

A patient is found to have sun-sensitive dermatitis, diarrhea, and dementia. He must be suffering from the deficiency of which of the following?

A patient on a maize diet presented with diarrhea, dementia and dermatitis. Which vitamin deficiency is responsible for these features

A child was fed on a staple diet of maize for a long time. Which of the following vitamin may get deficient in his body?

Glutathione is maintained in reduced state by the help of ?

Which vitamin can be synthesized from tryptophan?

Which of the following vitamins is not directly involved in energy metabolism?

Which of the following is not the source of cytosolic NADPH ?

Which of the following vitamins forms a coenzyme that acts as the primary electron acceptor in cellular oxidation-reduction reactions?