PG NEET Biochemistry MCQs 20 – Carbohydrates

1.ADP and ATP transfer in mitochondria is affected by

  1. atracyclocide
  2. oligomycine
  3. antimycine
  4. rotenone

Ans (1)

2. Mucopolysaccharide hyaluronic acid id present in

  1. aqueous humor
  2. vitreous humor
  3. lens
  4. cornea

Ans (2)

3. Glycogen in which part of the body cannot contribute directly to blood glucose

  1. liver
  2. muscle
  3. both
  4. none

Ans (2)

4. Which of the following inhibit the combination of acetyl CoA with oxaloacetate

  1. fumarate
  2. malonate
  3. fluoroacetate
  4. arsenite

Ans (3)

5. All the following are true about proteoglycan except

  1. contains amino sugar
  2. forms the structural element of the connectibve tissue
  3. contains a small amount of H2O
  4. chondroitin sulfate is an example

Ans (3)

6. The first substrate of Kreb’s cycle is

  1. pyruvate
  2. lysine
  3. HCl
  4. corticosteroids

Ans (1)

7. After overnight fasting level of glucose transporters are decreased in

  1. brain cell
  2. adipocytes
  3. hepatocytes
  4. RBC

Ans (3)

8. All the following is true about the HMP pathway

  1. occurs in cytosol
  2. produces NADPH
  3. H+ acceptor is NADP
  4. the end product is pyruvate

Ans (4)

9. All take place in mitochondria except

  1. electron transport
  2. urea cycle
  3. EMP pathway
  4. Kreb’s cycle

Ans (3)

10. Acetyl CoA can be converted to all except

  1. glucose
  2. fatty acid
  3. cholesterol
  4. ketone

Ans (1)

11. The function of 2,4 DNP is

  1. uncoupler of electron transport chain
  2. inhibits transport of ADP
  3. inhibits complex 1
  4. inhibits complex II

Ans (1)

12. Enzymes of glycolysis are present in

  1. cytoplasm
  2. mitochondria
  3. nucleus
  4. ER

Ans (1)

13. A patient presents with hypoglycemia and hepatomegaly hypoglycemia  do not respond to epinephrine. Most likely diagnosis

  1. Von Gierke’s disease
  2. Gaucher’s disease
  3. Anderson’s disease
  4. Pompe’s disease

Ans (1)

14. Which of the following is responsible for oxygen-dependent killing

  1. glutathione peroxidase
  2. NADPH oxidase
  3. catalase
  4. superoxidase dismutase

Ans (2)

15. Glucose finally metabolized to CO2 and water in

  1. cytosol
  2. mitochondria
  3. nucleus
  4. ER

Ans (2)

16. Thiamine requirement by the body depends on consumption of

  1. carbohydrates
  2. fats
  3. amino acids
  4. cholesterol

Ans (1)

17. Hypoxia increases glycolysis due to

  1. the release of the glycolytic enzyme
  2. 2,3 DPG which causes activation of pyruvate dehydrogenase
  3. both of the above
  4. none of the above

Ans (2)

18. Inorganic phosphate is used in which enzyme of glycolysis

  1. glucose 6 phosphate
  2. phosphofructokinase
  3. phosphoglycerate kinase
  4. enolase

Ans (3)

19. All are true about glutathione

  1. converts hemoglobin to methemoglobin
  2. decreases free radicals
  3. helps in conjugation
  4. cofactor for various enzymes

Ans (1)

20. High energy phosphate is produced in the following except

  1. HMP shunt
  2. oxidative pathway
  3. TCA
  4. glycolysis

Ans (1)

21. Final common pathway metabolism of carbohydrate, lipids and protein metabolism is

  1. gluconeogenesis
  2. glycolysis
  3. TCA
  4. HMP pathway

Ans (3)

22. Phosphorylase B is inactivated by

  1. ATP
  2. Ca2+
  3. cAMP
  4. glucose

Ans (4)

23. Phosphorylase B in the muscle is normally kept in the inhibited state by which one fo the following

  1. ATP
  2. AMP
  3. Ca2+
  4. glucose

Ans (2)

24. Cori’s disease is due to defect in

  1. branching enzyme
  2. debranching enzyme
  3. myophosphorylase
  4. hepatic phosphorylase

Ans (2)

25. False regarding glutathione

  1. converts hemoglobin to methemoglobin
  2. causes sulfur conjugation
  3. required for detoxification
  4. cofactor for many enzymes

Ans (1)

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