PG NEET Biochemistry MCQs 19 – Carbohydrates

1.  True about starvation is all except:

  1. 1. Increase serum GH
  2. 2.Increase serum glucose
  3. 3  Ketoacidosis
  4. 4. Increased plasma free fatty acids

Ans(2)


2.  Most potent activator of phosphofructokinase

  1. 2,3 BPG
  2. Glucagon
  3. Citrate
  4. Fructose 2, 6 bisphosphate

Ans(4)


3.  Muscle Glycogen

  1. Muscle Glycogen
  2. Liver glycogen
  3. Fat Storage
  4. Protein Storage

Ans(2)


4. First protein to be broken down for energy in prolonged starvation is form

  1. Skeletal muscle
  2. Smoothmuscles
  3. Kidney
  4. Liver

Ans(1)


5. Insulin decreases the activity of

  1. PFK 1
  2. Glucokinase
  3. Pyruvate carboxylase
  4. Acetyl CoA Carboxylase

Ans(3)


6. The earliest component to be depleted in starvation

  1. Carbohydrates
  2. Proteins
  3. Fat
  4. Calcium

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7. Most abundant sources of fuel in starvation

  1. Liver glycogen
  2. Muscle glycogen
  3. Adipose tissue
  4. Blood glucose

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8. Acetyl CoA carboxylase is stimulated by

  1. Starvation
  2. Glucagon
  3. Citrate
  4. All of the above

Ans(3)


9. Pyruvate kinase is inhibited by

  1. Insulin
  2. Fructose – 1,6 bisphosphate
  3. ATP
  4. All of the above

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10. Which of the following is not seen in we days

  1. Gluconeogenesis
  2. Ketogenesis
  3. Lipolysis
  4. Glycolysis

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11. Not a rate limiting enzyme

  1. PFK
  2. HMG Co A reductase
  3. HMG Co A synthase
  4. Aldolase

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12. All occur in mitochondria except

  1. Electron Transport Chain
  2. TCA cycle
  3. Ketogenesis
  4. Glycolysis

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13. The enzymes of glycogenesis are present in

  1. Mitochondria
  2. Cytosol
  3. Nucleus
  4. Lysosomes

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14. Not occurring in mitochondria

  1. Electron transport chain
  2. Ketogenesis
  3. Urea cycle
  4. Steroid Synthesis

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15. Gluconeogenesis occurs in

  1. In cytosol
  2. In mitochondria
  3. Both mitochondria and cytosol
  4. Golgi apparatus

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16. All of the following process occur in mitochondria except:

  1. Gluconeogenesis
  2. TCA cycle
  3. Beta oxidation of fatty acids
  4. Fatty acid synthesis

Ans(4)


17. Type VI glycogen storage disease is due to deficiency of

  1. Muscle phosphorylase
  2. Liver Phosphorylase
  3. Glucose 7 – Phosphatase
  4. Branching enzyme

Ans(2)


18. Defects in Pyruvate kinase and aldolase can lead to

  1. Sickle cell anemia
  2. Thalassemia
  3. Hemolytic anemia
  4. Reticulocytopenia

Ans(3)


19. Enzyme deficient in Mc Ardle’s disease

  1. Liver Phosphorylase
  2. Muscle Phosphorylase
  3. Lysosomal alpha 1,4 glusidase
  4. G6PD

Ans(2)


20. The β linkage in lactose which makes it indigestible is

  1. β 1-6 linkage
  2. β 2-4 linkage
  3. β 1-4 linkage
  4. β 2-6 linkage

Ans(3)


21. Fructosuria occurs due to deficiency of

  1. Aldolase A
  2. Aldolase B
  3. Enolase
  4. Fructokinase

Ans(4)


22. Essential pentosuria is due to defect in

  1. Glycolysis
  2. Polyol pathway
  3. Uronic acid pathway
  4. Kreb’s cycle

Ans(3)


23. Most common glycogen storage disease presenting with hypoglycemia and normal glycogen structure

  1. Von Gierke’s disease
  2. Pompe’s disease
  3. Mc Ardle’s disease
  4. Forbe’s disease

Ans(1)


24. Lactose intolerance is due to

  1. Deficiency of Galactokinase
  2. Deficiency of Uridyl transferase
  3. Deficiency of Lactase
  4. Deficiency of Enteropeptidase

Ans(3)


25. UDP glucose is not utilized in

  1. Galactose metabolism
  2. HMP shunt
  3. Uronic acid pathway
  4. Glycogen metabolism

Ans(2)


 


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