Carbohydrates Biochemistry Set 4

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Biochemistry (Carbohydrates And Carbohydrate Metabolism Set 4)

MCQ

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1. . The total glycogen content of the body is
about ______ gms.

A) 300

B) 100

C) 500

D) 200

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2. The normal resting state of humans, most
of the blood glucose burnt as “fuel” is
consumed by

A) Kidneys

B) Brain

C) Adipose tissue

D) Liver

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3. An essential for converting Glucose to
Glycogen in Liver is

A) CTP

B) GTP

C) Lactic acid

D) UTP

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4. Transketolase activity is affected in

A) Thiamine deficiency

B) Pyridoxine deficiency

C) Biotin deficiency

D) PABA deficiency

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5. ATP is ‘wasted’ in Rapoport-Lueberring
cycle in RBCs as otherwise it will inhibit

A) Phosphofructo kinase

B) Phosphohexo isomerase

C) Phosphoglucomutase

D) Phosphoenol pyruvate carboxy kinase

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6. Which of the following hormones is not
involved in carbohydrate metabolism

A) ACTH

B) Vasopressin

C) Cortisol

D) Glucogen

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7. Which of the following is a substrate for
aldolase activity in Glycolytic pathway

A) Fructose-6-p

B) Glyceraldehyde-3-p

C) Fructose1, 6-bisphosphate

D) Glucose-6-p

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8. Transketolase has the coenzyme

A) Pyridoxol phosphate

B) NAD+

C) TPP

D) FP

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9. Which of the following enzymes in Glycolytic pathway is inhibited by fluoride

A) Glyceraldehyde-3-p dehydrogenase

B) Pyruvate kinase

C) Phosphoglycerate kinase

D) Enolase

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10. Most of the metabolic pathways are
either anabolic or catabolic. Which of the
following pathways is considered as
“amphibolic” in nature

A) Lipolysis

B) TCA cycle

C) Glycolytic pathway

D) Glycogenesis

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11. Out of 24 mols of ATP formed in TCA cycle,
2 molecules of ATP can be formed at
“substrate level” by which of the
following reaction

A) Succinylcat→ Succinic acid

B) socitrate→ Oxaloacetate

C) Succinic acid→ Fumarate

D) Citric acid→ Isocitric acid

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12. Dehydrogenases involved in HMP shunt
are specific for

A) FAD

B) FMN

C) NAD+

D) NADP+

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13. A specific inhibitor for succinate
dehydrogenase is

A) Citrate

B) Arsinite

C) Melouate

D) Cyanide

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14. The enzymes involved in Phosphorylation
of glucose to glucose 6- phosphate are

A) Hexokinase

B) Glucokinase

C) Phosphofructokinase

D) Both (A) and (B)

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15. The “Primaquin sensitivity types of
haemolytic anaemia has been found to
relate to reduced R.B.C activity of which
enzyme

A) Hexokinase deficiency

B) Glucose-6-p dehydrogenase deficiency

C) Pyruvate kinase deficiency

D) Glucose-6-phosphatase deficiency

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16. A regulator of the enzyme Glycogen
synthase is

A) Citric acid

B) Pyruvate

C) 2, 3 bisphosphoglycerate

D) GTP

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17. The hydrolysis of Glucose-6-P is catalysed
by a phosphatase that is not formed in
which of the following

A) Muscle

B) Kidney

C) Small intestine

D) Liver

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18. UDP-Glucose is converted to UDPGlucuronic acid by

A) ATP

B) GTP

C) NADP+

D) NAD+

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19. Synthesis of Glucose from amino acids is
termed as

A) Glycogenesis

B) Glycolysis

C) Gluconeogenesis

D) Lipogenesis

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20. Pyruvate kinase requires ______ ions for
maximum activity

A) Ca2+

B) Mg2+

C) Na+

D) K+

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21. A substance that is not an intermediate
in the formation of D-glucuronic acid from
glucose is

A) UDP-Glucose

B) Glucose-6-p

C) 6-Phosphogluconate

D) Glucose-1-p

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22. The following metabolic abnormalities
occur in Diabetes mellitus except

A) Increased pyruvate carboxylase activate

B) Increased plasma FFA

C) Decreased lipogenesis

D) Decreased gluconeogenesis

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23. In conversion of Lactic acid to Glucose,
three reactions of Glycolytic pathway are
circumvented, which of the following
enzymes do not participate

A) Pyruvate kinase

B) Glucose-6-phosphatase

C) Phosphoenol pyruvate carboxy kinase

D) Pyruvate Carboxylase

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24. Two conditions in which gluconeogenesis
is increased are

A) Fed condition and thyrotoxicosis

B) Alcohol intake and cigarette smoking

C) Diabetes mellitus and atherosclerosis

D) Diabetes mellitus and Starvation

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25. Which of the following compound is a
positive allosteric modifier of the enzyme
pyruvate carboxylase

A) Acetyl CoA

B) Oxaloacetate

C) Biotin

D) ATP

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26. Acetyl CoA is not used for the synthesis
of

A) Fatty acid

B) Cholesterol

C) Citric acid

D) Pyruvic acid

Your score is

The average score is 69%

Carbohydrates Biochemistry Set 4

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