Carbohydrates Biochemistry Set 1

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Biochemistry (Carbohydrates And Carbohydrate Metabolism Set 1)

MCQ

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1. Ethanol decreases gluconeogenesis by

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

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

C) Inhibiting glucose-6-phosphatase

D) Inhibiting PEP carboxykinase

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2. Gluconeogenesis is decreased by

A) Glucocorticoids

B) Insulin

C) Epinephrine

D) Glucagon

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3. Lactate formed in muscles can be utilised
through

A) Cori’s cycle

B) Glucose-alanine cycle

C) Rapoport-Luebeling cycle

D) Citric acid cycl

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4. Glucose uptake by liver cells is

A) A saturable process

B) Energy-consuming

C) Insulin-dependent

D) Insulin-independent

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5. Polyuria can occur in

A) High fever

B) Diarrhea

C) Acute glomerulonephritis Acute glomerulonephritis

D) Diabetes mellitus

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6. Hexokinase has a high affinity for glucose
than

A) All of the above

B) Galactokinase

C) Glucokinase

D) Fructokinase

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7. Uridine diphosphate glucose (UDPG) is

A) Required for metabolism of galactose

B) All of the above

C) Required for synthesis of glucuronic acid

D) A substrate for glycogen synthetase

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

A) Erythrocytes

B) All of these

C) Liver

D) Brain

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9. An amphibolic pathway among the
following is

A) Gluconeogenesis

B) HMP shunt

C) Glycolysis

D) Citirc acid cycle

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10. 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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11. 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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12. The following is actively absorbed in the
intestine

A) Galactose

B) Fructose

C) Mannose

D) None of these

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13. The carrier of the citric acid cycle is

A) Oxaloacetate

B) Malate

C) Succinate

D) Fumarate

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

A) Cori’s disease

B) Pompe’s disease

C) Von Gierke’s disease

D) McArdle’s disease

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15. Pyruvate carboxylase is regulated by

A) Allosteric regulation

B) Induction

C) Repression

D) All of these

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16. Cori’s cycle transfers

A) Pyruvate from liver to muscles

B) Glucose from muscles to liverGlucose from muscles to liver

C) Lactate from liver to muscles

D) Lactate from muscles to liver

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17. Glycogenin is

A) Intermediate in glycogen breakdown

B) Polymer of glycogen molecules

C) Uncoupler of oxidative phosphorylation

D) Protein primer for glycogen synthesis

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18. Glycogen synthetase activity is depressed
by

A) Cyclic AMP

B) Fructokinase

C) Glucose

D) Insulin

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19. Excessive intake of ethanol increases the
ratio

A) FADH2 : FAD

B) NAD+ : NADH

C) NADH : NAD+

D) FAD : FADH2

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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) Polysaccharides

B) All of these

C) Monosaccharides

D) Dissaccharides

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21. The reaction succinyl COA to succinate
requires

A) NADP+

B) CDP

C) ADP

D) GDP

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22. Specific gravity of urine is decreased in

A) Diabetes mellitus

B) Diarrhea

C) Acute glomerulonephritis

D) Chronic glomerulonephritis

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

A) Insulin

B) Epinephrine

C) Testosterone

D) Progesterone

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

A) Neither of these

B) Maltotriose

C) Both of the above

D) Maltose

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

A) Fructose biphosphate isomerase

B) Phosphofructokinase-2

C) Fructose-1, 6-biphosphatase

D) Phosphofructokinase-1

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26. Galactose on oxidation with conc. HNO3
produces

A) Gluconic acid

B) Mucic acid

C) Saccharic acid

D) Saccharo Lactone

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The average score is 27%

Carbohydrates Biochemistry Set 1

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