Carbohydrates Biochemistry Set 1

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Biochemistry (Carbohydrates And Carbohydrate Metabolism Set 1)

MCQ

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1. 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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2. Glucose-6-phosphatase is not present in

A) Muscles and adipose tissue

B) Kidneys and muscles

C) Liver and kidneys

D) Kidneys and adipose tissue

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3. Hexokinase has a high affinity for glucose
than

A) Glucokinase

B) All of the above

C) Fructokinase

D) Galactokinase

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4. Uridine diphosphate glucose (UDPG) is

A) A substrate for glycogen synthetase

B) All of the above

C) Required for metabolism of galactose

D) Required for synthesis of glucuronic acid

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

A) Dihydroxyacetone phosphorylase

B) Phosphotriose isomerase

C) Triose isomerase

D) Diphosphotriose isomerase

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6. Cori’s cycle transfers

A) Lactate from muscles to liver

B) Lactate from liver to muscles

C) Pyruvate from liver to muscles

D) Glucose from muscles to liverGlucose from muscles to liver

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7. Ethanol decreases gluconeogenesis by

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

B) Inhibiting glucose-6-phosphatase

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

D) Inhibiting PEP carboxykinase

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8. 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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9. The following is actively absorbed in the
intestine

A) None of these

B) Mannose

C) Galactose

D) Fructose

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10. Gluconeogenesis is decreased by

A) Glucocorticoids

B) Epinephrine

C) Insulin

D) Glucagon

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

A) Insulin

B) Progesterone

C) Testosterone

D) Epinephrine

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12. Glucose uptake by liver cells is

A) Insulin-dependent

B) Energy-consuming

C) A saturable process

D) Insulin-independent

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13. Lactate formed in muscles can be utilised
through

A) Rapoport-Luebeling cycle

B) Citric acid cycl

C) Cori’s cycle

D) Glucose-alanine cycle

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

A) All of these

B) Erythrocytes

C) Brain

D) Liver

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15. Polyuria can occur in

A) Acute glomerulonephritis Acute glomerulonephritis

B) High fever

C) Diabetes mellitus

D) Diarrhea

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16. Glycogenin is

A) Protein primer for glycogen synthesis

B) Uncoupler of oxidative phosphorylation

C) Intermediate in glycogen breakdown

D) Polymer of glycogen molecules

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17. Specific gravity of urine is decreased in

A) Diarrhea

B) Diabetes mellitus

C) Chronic glomerulonephritis

D) Acute glomerulonephritis

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18. Pyruvate carboxylase is regulated by

A) Repression

B) Allosteric regulation

C) All of these

D) Induction

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19. The reaction succinyl COA to succinate
requires

A) ADP

B) CDP

C) GDP

D) NADP+

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

A) Fructose biphosphate isomerase

B) Phosphofructokinase-2

C) Phosphofructokinase-1

D) Fructose-1, 6-biphosphatase

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21. Glycogen synthetase activity is depressed
by

A) Glucose

B) Insulin

C) Cyclic AMP

D) Fructokinase

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22. The carrier of the citric acid cycle is

A) Succinate

B) Malate

C) Oxaloacetate

D) Fumarate

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

A) Maltotriose

B) Both of the above

C) Neither of these

D) Maltose

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24. An amphibolic pathway among the
following is

A) Citirc acid cycle

B) HMP shunt

C) Glycolysis

D) Gluconeogenesis

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25. Excessive intake of ethanol increases the
ratio

A) FAD : FADH2

B) FADH2 : FAD

C) NAD+ : NADH

D) NADH : NAD+

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26. Galactose on oxidation with conc. HNO3
produces

A) Saccharic acid

B) Mucic acid

C) Gluconic acid

D) Saccharo Lactone

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The average score is 40%

Carbohydrates Biochemistry Set 1

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