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) Pompe’s disease

C) Cori’s disease

D) McArdle’s disease

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2. Gluconeogenesis is decreased by

A) Glucagon

B) Glucocorticoids

C) Epinephrine

D) Insulin

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3. Glycogenin is

A) Polymer of glycogen molecules

B) Intermediate in glycogen breakdown

C) Uncoupler of oxidative phosphorylation

D) Protein primer for glycogen synthesis

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

A) Fructose-1, 6-biphosphatase

B) Fructose biphosphate isomerase

C) Phosphofructokinase-1

D) Phosphofructokinase-2

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

A) Maltotriose

B) Maltose

C) Neither of these

D) Both of the above

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6. Polyuria can occur in

A) Diarrhea

B) Diabetes mellitus

C) Acute glomerulonephritis Acute glomerulonephritis

D) High fever

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7. Specific gravity of urine is decreased in

A) Chronic glomerulonephritis

B) Acute glomerulonephritis

C) Diabetes mellitus

D) Diarrhea

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8. Uridine diphosphate glucose (UDPG) is

A) All of the above

B) Required for metabolism of galactose

C) A substrate for glycogen synthetase

D) Required for synthesis of glucuronic acid

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9. Lactate formed in muscles can be utilised
through

A) Citric acid cycl

B) Glucose-alanine cycle

C) Cori’s cycle

D) Rapoport-Luebeling cycle

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10. The following is actively absorbed in the
intestine

A) Fructose

B) Galactose

C) None of these

D) Mannose

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11. The carrier of the citric acid cycle is

A) Malate

B) Oxaloacetate

C) Fumarate

D) Succinate

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12. Excessive intake of ethanol increases the
ratio

A) NADH : NAD+

B) FAD : FADH2

C) FADH2 : FAD

D) NAD+ : NADH

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

A) Phosphotriose isomerase

B) Triose isomerase

C) Dihydroxyacetone phosphorylase

D) Diphosphotriose isomerase

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14. An amphibolic pathway among the
following is

A) Citirc acid cycle

B) Glycolysis

C) HMP shunt

D) Gluconeogenesis

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15. Hexokinase has a high affinity for glucose
than

A) Glucokinase

B) Galactokinase

C) All of the above

D) Fructokinase

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16. Galactose on oxidation with conc. HNO3
produces

A) Saccharo Lactone

B) Mucic acid

C) Saccharic acid

D) Gluconic acid

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17. Glycogen synthetase activity is depressed
by

A) Insulin

B) Cyclic AMP

C) Fructokinase

D) Glucose

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18. 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) Polysaccharides

B) Dissaccharides

C) Monosaccharides

D) All of these

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19. The reaction succinyl COA to succinate
requires

A) GDP

B) ADP

C) CDP

D) NADP+

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20. Cori’s cycle transfers

A) Lactate from liver to muscles

B) Pyruvate from liver to muscles

C) Lactate from muscles to liver

D) Glucose from muscles to liverGlucose from muscles to liver

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21. Glucose-6-phosphatase is not present in

A) Muscles and adipose tissue

B) Liver and kidneys

C) Kidneys and muscles

D) Kidneys and adipose tissue

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22. Pyruvate carboxylase is regulated by

A) Allosteric regulation

B) Induction

C) All of these

D) Repression

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23. Glucose uptake by liver cells is

A) Insulin-independent

B) A saturable process

C) Insulin-dependent

D) Energy-consuming

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

A) All of these

B) Erythrocytes

C) Liver

D) Brain

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26. Ethanol decreases gluconeogenesis by

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

B) Inhibiting glucose-6-phosphatase

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

D) Inhibiting PEP carboxykinase

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The average score is 27%

Carbohydrates Biochemistry Set 1

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