biochemistry MCQs – Page 2

Practise focused biochemistry questions with marked answers for exam preparation and subject revision.

biochemistry Mcqs

21. Which metabolite of TCA cycle is used in detoxification of ammonia in brain_____________?
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A. Glycine

B. Alpha ketoglutarate

C. Ornithine

D. Oxalocetate

22. Coenzyme responsible for single carbon transfer is______________?
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A. Acetyl co enzyme A

B. THF4

C. Pyridoxine

D. Biotin

23. Which of the following statement is TRUE? The hydrolysis of lactose yields glucose and galactose_____________?
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A. The hydrolysis of lactose yields glucose and galactose

B. The hydrolysis of sucrose yields only glucose

C. The hydrolysis of maltose yields glucose and fructose

D. All of the above statements are true

24. During conversion of glycerol to pyruvic acid, the first glycolytic intermediate to form is_______________?
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A. 2- phospho glyceric acid

B. Dihydroxy acetone phosphate

C. 3- phospho glyceric acid

D. 3- phospho glyceralehyde

25. Krebs cycle does not occur in______________?
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A. RBC

B. All of the above

C. Muscle

D. Heart

26. Glucose 6 phosphatase deficiency is seen in______________?
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A. McArdles syndrome

B. Downs syndrome

C. Von Gierkes disease

D. Pompers disease

27. Enzymes concerned with the citric acid cycle are found in______________?
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A. Nucleus

B. Non-particulate cytoplasm

C. Mitochondria

D. Ribosomes

28. Bile contains______________?
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A. All of the above

B. Lithocholic acid

C. Deoxycholic acid

D. Chenodeoxycholic acid

E. Cholic acid

29. Muscle glycogen, which cannot contribute to blood glucose due to the absence of which enzymes ?
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A. Phosphoglutamase

B. Debranching enzyme

C. Branching enzyme

D. Glucose-6-phosphotase

30. Which of the following is abnormal constituent of urine_____________?
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A. Urea

B. glucose

C. Creatine

D. None of the above

31. Serum alkaline phosphatase level increase in_______________?
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A. Hypothyroidism

B. Carcinoma of prostate

C. Hyperparathyroidism

D. Myocardial infarction

32. Synthesis of protein occurs on_____________?
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A. Mitochondria

B. Poly ribosomes

C. Golgi bodies

D. Nucleus

33. Multiienzyme complex in human_______________?
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A. Fatty acid synthetase

B. Malonyl CoA carboxylase

C. Carbomoyl Phosphate synthetase

D. Adenosine phospho ribosyl transferase

34. Glucose can be synthesized from all except_____________?
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A. Glycerol

B. Acetoacetate

C. Lactic acid

D. Amino acids

35. Which is not a oligosaccharide sugar ?
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A. Sucrose

B. Maltose

C. Lactose

D. Galactose

36. An essential for the conversion of glucose to glycogen in liver is____________?
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A. GTP

B. Guanosine

C. UTP

D. Pyruvate Kinase

37. Inactive precursors of enzymes are known as_______________?
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A. Coenzymes

B. Proenzymes

C. Holoenzymes

D. Apoenzymes

38. Glycogen breakdown leads to formation of______________?
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A. Lactic acid

B. Glucose & Lactic acid

C. Glycoprotein

D. Glucose

39. An enzyme not involved in glycolysis is______________?
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A. Phosphoglycero mutase

B. Aldolase

C. Glycerophosphate dehydrogenase

D. Enolase

40. Which of them is multienzyme complex_____________?
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A. Pyruvate dehydrogenase

B. Alpha ketoglutarate dehydrogenase

C. Succinate dehydrogenase

D. Enolase

E. Both A & B

Showing 21 to 40 of 448 mcqs