Carbohydrates Biochemistry Set 1

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Biochemistry (Carbohydrates And Carbohydrate Metabolism Set 1)

MCQ

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

A) Insulin

B) Progesterone

C) Epinephrine

D) Testosterone

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2. Cori’s cycle transfers

A) Pyruvate from liver to muscles

B) Lactate from liver to muscles

C) Glucose from muscles to liverGlucose from muscles to liver

D) Lactate from muscles to liver

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3. Glucose uptake by liver cells is

A) A saturable process

B) Insulin-independent

C) Energy-consuming

D) Insulin-dependent

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4. Glycogen synthetase activity is depressed
by

A) Insulin

B) Glucose

C) Cyclic AMP

D) Fructokinase

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5. Ethanol decreases gluconeogenesis by

A) Inhibiting glucose-6-phosphatase

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

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

D) Inhibiting PEP carboxykinase

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

A) All of these

B) Liver

C) Erythrocytes

D) Brain

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7. Hexokinase has a high affinity for glucose
than

A) Glucokinase

B) All of the above

C) Fructokinase

D) Galactokinase

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8. The following is actively absorbed in the
intestine

A) Mannose

B) Galactose

C) Fructose

D) None of these

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

A) Phosphotriose isomerase

B) Dihydroxyacetone phosphorylase

C) Triose isomerase

D) Diphosphotriose isomerase

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10. Galactose on oxidation with conc. HNO3
produces

A) Saccharic acid

B) Gluconic acid

C) Saccharo Lactone

D) Mucic acid

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11. Specific gravity of urine is decreased in

A) Diarrhea

B) Diabetes mellitus

C) Chronic glomerulonephritis

D) Acute glomerulonephritis

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12. The reaction succinyl COA to succinate
requires

A) CDP

B) ADP

C) NADP+

D) GDP

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13. Uridine diphosphate glucose (UDPG) is

A) A substrate for glycogen synthetase

B) Required for metabolism of galactose

C) Required for synthesis of glucuronic acid

D) All of the above

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14. Lactate formed in muscles can be utilised
through

A) Citric acid cycl

B) Rapoport-Luebeling cycle

C) Cori’s cycle

D) Glucose-alanine cycle

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15. Polyuria can occur in

A) Acute glomerulonephritis Acute glomerulonephritis

B) Diarrhea

C) High fever

D) Diabetes mellitus

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16. Glycogenin is

A) Protein primer for glycogen synthesis

B) Polymer of glycogen molecules

C) Intermediate in glycogen breakdown

D) Uncoupler of oxidative phosphorylation

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

A) Both of the above

B) Neither of these

C) Maltose

D) Maltotriose

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18. An amphibolic pathway among the
following is

A) Citirc acid cycle

B) Glycolysis

C) Gluconeogenesis

D) HMP shunt

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19. Gluconeogenesis is decreased by

A) Epinephrine

B) Glucagon

C) Insulin

D) Glucocorticoids

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20. 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) All of these

B) Polysaccharides

C) Monosaccharides

D) Dissaccharides

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

A) McArdle’s disease

B) Pompe’s disease

C) Von Gierke’s disease

D) Cori’s disease

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22. The carrier of the citric acid cycle is

A) Fumarate

B) Malate

C) Oxaloacetate

D) Succinate

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23. Glucose-6-phosphatase is not present in

A) Kidneys and adipose tissue

B) Kidneys and muscles

C) Liver and kidneys

D) Muscles and adipose tissue

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24. Excessive intake of ethanol increases the
ratio

A) FAD : FADH2

B) FADH2 : FAD

C) NAD+ : NADH

D) NADH : NAD+

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25. Pyruvate carboxylase is regulated by

A) Allosteric regulation

B) Repression

C) All of these

D) Induction

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

A) Fructose-1, 6-biphosphatase

B) Phosphofructokinase-2

C) Fructose biphosphate isomerase

D) Phosphofructokinase-1

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The average score is 24%

Carbohydrates Biochemistry Set 1

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