Carbohydrates Biochemistry Set 1

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Biochemistry (Carbohydrates And Carbohydrate Metabolism Set 1)

MCQ

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1. Pyruvate carboxylase is regulated by

A) Allosteric regulation

B) All of these

C) Induction

D) Repression

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2. Glucose-6-phosphatase is absent or
deficient in

A) Von Gierke’s disease

B) Cori’s disease

C) McArdle’s disease

D) Pompe’s disease

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3. Glycogenin is

A) Intermediate in glycogen breakdown

B) Protein primer for glycogen synthesis

C) Polymer of glycogen molecules

D) Uncoupler of oxidative phosphorylation

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4. Glucose-6-phosphatase is not present in

A) Muscles and adipose tissue

B) Kidneys and muscles

C) Kidneys and adipose tissue

D) Liver and kidneys

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5. Action of salivary amylase on starch leads
to the formation of

A) Maltose

B) Both of the above

C) Neither of these

D) Maltotriose

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6. Excessive intake of ethanol increases the
ratio

A) NAD+ : NADH

B) NADH : NAD+

C) FAD : FADH2

D) FADH2 : FAD

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7. In the diet of a diabetic patient, the
recommended carbohydrate intake
should preferably be in the form of In the diet of a diabetic patient, the
recommended carbohydrate intake
should preferably be in the form of

A) Dissaccharides

B) Polysaccharides

C) All of these

D) Monosaccharides

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8. During starvation, ketone bodies are used
as a fuel by

A) Erythrocytes

B) Brain

C) All of these

D) Liver

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9. Dihydroxyacetone phosphate and
glyceraldehyde-3-phosphate are
intercoverted by

A) Triose isomerase

B) Diphosphotriose isomerase

C) Phosphotriose isomerase

D) Dihydroxyacetone phosphorylase

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10. Cori’s cycle transfers

A) Lactate from muscles to liver

B) Pyruvate from liver to muscles

C) Lactate from liver to muscles

D) Glucose from muscles to liverGlucose from muscles to liver

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11. Hexokinase has a high affinity for glucose
than

A) Fructokinase

B) Galactokinase

C) Glucokinase

D) All of the above

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12. An amphibolic pathway among the
following is

A) Citirc acid cycle

B) Gluconeogenesis

C) HMP shunt

D) Glycolysis

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13. Galactose on oxidation with conc. HNO3
produces

A) Saccharic acid

B) Gluconic acid

C) Saccharo Lactone

D) Mucic acid

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14. Fructose-2, 6-biphosphate is formed by
the action of

A) Phosphofructokinase-1

B) Fructose biphosphate isomerase

C) Phosphofructokinase-2

D) Fructose-1, 6-biphosphatase

15 / 26

15. Cyclic AMP is formed from ATP by the
enzyme adenylate cyclase which is
activated by the hormone

A) Testosterone

B) Progesterone

C) Epinephrine

D) Insulin

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16. The following is actively absorbed in the
intestine

A) Galactose

B) None of these

C) Mannose

D) Fructose

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17. Ethanol decreases gluconeogenesis by

A) Inhibiting PEP carboxykinase

B) Converting NAD+ into NADH and decreasing the availability of lactate

C) Converting NAD+ into NADH and decreasing the availability of pyruvate

D) Inhibiting glucose-6-phosphatase

18 / 26

18. Specific gravity of urine is decreased in

A) Diarrhea

B) Acute glomerulonephritis

C) Diabetes mellitus

D) Chronic glomerulonephritis

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19. The reaction succinyl COA to succinate
requires

A) ADP

B) NADP+

C) GDP

D) CDP

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20. The carrier of the citric acid cycle is

A) Fumarate

B) Malate

C) Succinate

D) Oxaloacetate

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21. Gluconeogenesis is decreased by

A) Insulin

B) Glucagon

C) Glucocorticoids

D) Epinephrine

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22. Lactate formed in muscles can be utilised
through

A) Rapoport-Luebeling cycle

B) Cori’s cycle

C) Citric acid cycl

D) Glucose-alanine cycle

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23. Glycogen synthetase activity is depressed
by

A) Glucose

B) Fructokinase

C) Cyclic AMP

D) Insulin

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24. Uridine diphosphate glucose (UDPG) is

A) Required for metabolism of galactose

B) Required for synthesis of glucuronic acid

C) All of the above

D) A substrate for glycogen synthetase

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25. Glucose uptake by liver cells is

A) Insulin-dependent

B) A saturable process

C) Insulin-independent

D) Energy-consuming

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26. Polyuria can occur in

A) High fever

B) Diarrhea

C) Diabetes mellitus

D) Acute glomerulonephritis Acute glomerulonephritis

Your score is

The average score is 26%

Carbohydrates Biochemistry Set 1

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