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) Testosterone

B) Insulin

C) Progesterone

D) Epinephrine

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2. Gluconeogenesis is decreased by

A) Glucagon

B) Epinephrine

C) Insulin

D) Glucocorticoids

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3. Excessive intake of ethanol increases the
ratio

A) NADH : NAD+

B) FAD : FADH2

C) NAD+ : NADH

D) FADH2 : FAD

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4. Galactose on oxidation with conc. HNO3
produces

A) Saccharic acid

B) Saccharo Lactone

C) Gluconic acid

D) Mucic acid

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5. Glycogen synthetase activity is depressed
by

A) Insulin

B) Fructokinase

C) Cyclic AMP

D) Glucose

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

A) Dihydroxyacetone phosphorylase

B) Phosphotriose isomerase

C) Diphosphotriose isomerase

D) Triose isomerase

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7. Pyruvate carboxylase is regulated by

A) Induction

B) Allosteric regulation

C) Repression

D) All of these

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8. Glycogenin is

A) Polymer of glycogen molecules

B) Protein primer for glycogen synthesis

C) Intermediate in glycogen breakdown

D) Uncoupler of oxidative phosphorylation

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9. Lactate formed in muscles can be utilised
through

A) Cori’s cycle

B) Rapoport-Luebeling cycle

C) Glucose-alanine cycle

D) Citric acid cycl

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10. Specific gravity of urine is decreased in

A) Diabetes mellitus

B) Acute glomerulonephritis

C) Diarrhea

D) Chronic glomerulonephritis

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

A) Brain

B) Erythrocytes

C) All of these

D) Liver

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

A) Pompe’s disease

B) McArdle’s disease

C) Cori’s disease

D) Von Gierke’s disease

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13. Uridine diphosphate glucose (UDPG) is

A) All of the above

B) A substrate for glycogen synthetase

C) Required for metabolism of galactose

D) Required for synthesis of glucuronic acid

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14. The carrier of the citric acid cycle is

A) Malate

B) Oxaloacetate

C) Succinate

D) Fumarate

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15. Glucose-6-phosphatase is not present in

A) Liver and kidneys

B) Kidneys and adipose tissue

C) Muscles and adipose tissue

D) Kidneys and muscles

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16. Ethanol decreases gluconeogenesis by

A) Inhibiting glucose-6-phosphatase

B) Inhibiting PEP carboxykinase

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

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

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17. An amphibolic pathway among the
following is

A) Citirc acid cycle

B) Gluconeogenesis

C) HMP shunt

D) Glycolysis

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18. Cori’s cycle transfers

A) Glucose from muscles to liverGlucose from muscles to liver

B) Lactate from liver to muscles

C) Lactate from muscles to liver

D) Pyruvate from liver to muscles

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19. 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) Monosaccharides

B) Dissaccharides

C) Polysaccharides

D) All of these

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20. Glucose uptake by liver cells is

A) Insulin-dependent

B) A saturable process

C) Energy-consuming

D) Insulin-independent

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21. Hexokinase has a high affinity for glucose
than

A) Fructokinase

B) Glucokinase

C) All of the above

D) Galactokinase

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

A) Both of the above

B) Maltose

C) Neither of these

D) Maltotriose

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23. Polyuria can occur in

A) Diabetes mellitus

B) Acute glomerulonephritis Acute glomerulonephritis

C) High fever

D) Diarrhea

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24. The reaction succinyl COA to succinate
requires

A) NADP+

B) CDP

C) ADP

D) GDP

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25. The following is actively absorbed in the
intestine

A) None of these

B) Galactose

C) Mannose

D) Fructose

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

A) Phosphofructokinase-1

B) Fructose biphosphate isomerase

C) Fructose-1, 6-biphosphatase

D) Phosphofructokinase-2

Your score is

The average score is 24%

Carbohydrates Biochemistry Set 1

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