Carbohydrates Biochemistry Set 4

/26

Biochemistry (Carbohydrates And Carbohydrate Metabolism Set 4)

MCQ

1 / 26

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

A) Pyruvate Carboxylase

B) Phosphoenol pyruvate carboxy kinase

C) Glucose-6-phosphatase

D) Pyruvate kinase

2 / 26

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

A) ATP

B) Biotin

C) Oxaloacetate

D) Acetyl CoA

3 / 26

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

A) 300

B) 200

C) 100

D) 500

4 / 26

4. A specific inhibitor for succinate
dehydrogenase is

A) Arsinite

B) Cyanide

C) Melouate

D) Citrate

5 / 26

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

A) Muscle

B) Liver

C) Small intestine

D) Kidney

6 / 26

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

A) Phosphoglycerate kinase

B) Glyceraldehyde-3-p dehydrogenase

C) Pyruvate kinase

D) Enolase

7 / 26

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

A) GTP

B) Lactic acid

C) CTP

D) UTP

8 / 26

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

A) Liver

B) Kidneys

C) Adipose tissue

D) Brain

9 / 26

9. Two conditions in which gluconeogenesis
is increased are

A) Fed condition and thyrotoxicosis

B) Diabetes mellitus and atherosclerosis

C) Alcohol intake and cigarette smoking

D) Diabetes mellitus and Starvation

10 / 26

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

A) Glucose-6-p

B) 6-Phosphogluconate

C) UDP-Glucose

D) Glucose-1-p

11 / 26

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

A) Both (A) and (B)

B) Phosphofructokinase

C) Hexokinase

D) Glucokinase

12 / 26

12. Acetyl CoA is not used for the synthesis
of

A) Cholesterol

B) Pyruvic acid

C) Citric acid

D) Fatty acid

13 / 26

13. Dehydrogenases involved in HMP shunt
are specific for

A) FAD

B) FMN

C) NADP+

D) NAD+

14 / 26

14. The following metabolic abnormalities
occur in Diabetes mellitus except

A) Increased pyruvate carboxylase activate

B) Decreased gluconeogenesis

C) Decreased lipogenesis

D) Increased plasma FFA

15 / 26

15. Transketolase activity is affected in

A) Thiamine deficiency

B) Biotin deficiency

C) Pyridoxine deficiency

D) PABA deficiency

16 / 26

16. 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

17 / 26

17. 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) Pyruvate kinase deficiency

C) Glucose-6-phosphatase deficiency

D) Glucose-6-p dehydrogenase deficiency

18 / 26

18. UDP-Glucose is converted to UDPGlucuronic acid by

A) NAD+

B) GTP

C) NADP+

D) ATP

19 / 26

19. A regulator of the enzyme Glycogen
synthase is

A) GTP

B) Pyruvate

C) Citric acid

D) 2, 3 bisphosphoglycerate

20 / 26

20. Transketolase has the coenzyme

A) NAD+

B) FP

C) TPP

D) Pyridoxol phosphate

21 / 26

21. Synthesis of Glucose from amino acids is
termed as

A) Glycolysis

B) Gluconeogenesis

C) Glycogenesis

D) Lipogenesis

22 / 26

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

A) Glucogen

B) Cortisol

C) ACTH

D) Vasopressin

23 / 26

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

A) Fructose1, 6-bisphosphate

B) Glyceraldehyde-3-p

C) Fructose-6-p

D) Glucose-6-p

24 / 26

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

A) TCA cycle

B) Glycogenesis

C) Lipolysis

D) Glycolytic pathway

25 / 26

25. Pyruvate kinase requires ______ ions for
maximum activity

A) Na+

B) K+

C) Mg2+

D) Ca2+

26 / 26

26. 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) socitrate→ Oxaloacetate

B) Succinic acid→ Fumarate

C) Citric acid→ Isocitric acid

D) Succinylcat→ Succinic acid

Your score is

The average score is 69%

Carbohydrates Biochemistry Set 4

Follow Us on Social Media