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Biochemistry Mcqs

The end product of glycolysis under anaerobic conditions is_______________?

  • (A)  Lactic acid
  • (B)  Pyruvic acid
  • (C)  Acetoacetic acid
  • (D)  Oxaloacetic acid
Submitted By :Ali Uppal


The enzyme involved in the first committed step of glycolysis is____________?

  • (A)  Phosphofructokinase
  • (B)  Glucose-6-Phosphatase
  • (C)  Hexokinase
  • (D)  Enolase
Submitted By :Ali Uppal


Which of the following is correctly matched ?

  • (A)  Isocitrate to oxalo succinate -1 ATP is formed
  • (B)  Succinyl CoA to succinate -1 ATP is formed
  • (C)  Succinate to furmarate -1 ATP is formed
  • (D)  Malate to oxaloacetate -1 ATP is formed
Submitted By :Ali Uppal


In TCA cycle substrate level phosphorylation occurs at____________?

  • (A)  Succinate dehydrogenase
  • (B)  Malonate reduction
  • (C)  Thiokinase
  • (D)  None of the above
Submitted By :Ali Uppal


In TCA cycle, citrate is converted in to after losing a molecule of H2O_____________?

  • (A)  Isocitrate
  • (B)  Cisaconitate
  • (C)  Oxalocetate
  • (D)  Glutarate
Submitted By :Ali Uppal


Which metabolite of TCA cycle is used in detoxification of ammonia in brain_____________?

  • (A)  Alpha ketoglutarate
  • (B)  Ornithine
  • (C)  Oxalocetate
  • (D)  Glycine
Submitted By :Ali Uppal


Phosphofructokinase is the key enzyme of______________?

  • (A)  Glycolysis
  • (B)  Gluconeogenesis
  • (C)  Beta oxidation
  • (D)  TCA cycle
Submitted By :Ali Uppal


An enzyme not involved in glycolysis is______________?

  • (A)  Enolase
  • (B)  Phosphoglycero mutase
  • (C)  Aldolase
  • (D)  Glycerophosphate dehydrogenase
Submitted By :Ali Uppal


McArdles disease is due to the deficiency of_____________?

  • (A)  Glucose 1 phosphatase
  • (B)  Glucose 1,6 phosphatase
  • (C)  Glucose 6 phosphatase
  • (D)  Myophosphorylase
Submitted By :Ali Uppal


Gluconeogenesis occurs in the liver and _______?

  • (A)  Kidney
  • (B)  Muscle
  • (C)  Heart
  • (D)  Fat
Submitted By :Ali Uppal