Carbohydrates and Metabolism

Carbohydrates and Metabolism Multiple Choice Questions MCQs with Answers

1. Which is not a polymer of glucose?
a. Glycogen
b. Cellulose
c. Amylase
d. Inulin
Answer: d. Inulin

2. An essential for the conversion of glucose in the liver is:
a. UTP
b. GTP
c. Pyruvate kinase
d. Guanosine
Answer: a. UTP

3. Glycogen synthesis is increased by which of the following?
a. Cortisone
b. Insulin
c. GH
d. Epinephrine
Answer: b. Insulin

4. Major contribution toward gluconeogenesis is by which of the following?
a. Lactate
b. Glycerol
c. Ketones
d. Alanine
Answer: a. Lactate

5. Which of the following organ is responsible for carbohydrate metabolism?
a. Liver
b. Muscles
c. Heart
d. Kidney
Answer: a. Liver

6. Gluconeogenesis is decreased by which of the following?
a. Glucagon
b. Epinephrine
c. Glucocorticoids
d. Insulin
Answer: d. Insulin

7. Glucose-6-phosphatase is not present in:
a. Liver and kidney
b. Kidney and muscles
c. Kidneys and adipose tissue
d. Muscles and adipase tissue
Answer: d. Muscles and adipase tissue

8. Which of the following can utilize Lactate formed in muscles?
a. Rapopart-luebeling cycles
b. Glucose-alanine cycles
c. Cori’s cycles
d. Citric acid cycle
Answer: c. Cori’s cycles

9. The reaction of salivary amylase on starch leads to the formation of:
a. Lactose
b. Sucrose
c. Maltose
d. Neither of these
Answer: c. Maltose

10. Which of the following is the amphibolic pathway?
a. HMP shunt
b. Glycolysis
c. Citrus acid cycle
d. Gluconeogenesis
Answer: c. Citrus acid cycle

11. During starvation, ketone bodies are used as a fuel by:
a. Erythrocytes
b. Brain
c. Liver
d. Kidney
Answer: b. Brain

12. Which of the following is not a mucopolysaccharide?
a. Heparin
b. Chondroitin sulfate
c. Hyaluronic acid
d. Insulin
Answer: d. Insulin

13. Which sugar is found in the hemolymph of most insects?
a. Maltose
b. Lactose
c. Trehalose
d. Galactose
Answer: c. Trehalose

14. A starving person will first use which of the following?
a. Fats
b. Glycogen
c. Blood protein
d. Muscles protein
Answer: b. Glycogen

15. Which of the following sugar is found in ATP??
a. Deoxyribose
b. Ribose
c. Trehalose
d. Glucose
Answer: b. Ribose

16. Which of the following enzymes are not involved in galactose metabolism??
a. Galactokinase
b. Glucokinase
c. Galactose-1-Phosphate
d. UDP-Galactose 4- epimerase
Answer: b. Glucokinase

17. Which of the following enzymes leads to a disease known as Tarui’s disease?
a. Glucokinase
b. Pyruvate Kinase
c. Phosphofructokinase
d. Phosphoglucomutase
Answer: c. Phosphofructokinase

18. Which of the following enzyme deficiency leads to a disorder known as hemolytic anemia?
a. Glucokinase
b. Pyruvate Kinase
c. Phosphoglucomutase
d. Phosphofructokinase
Answer: b. Pyruvate Kinase

19. Which of the following is also known as the tricarboxylic acid (TCA)?
a. Acetic acid
b. Succinic acid
c. Oxaloacetic acid
d. Citric acid
Answer: d. Citric acid

20. Which of the following is responsible for carbohydrate metabolism?
a. Glucokinase
b. Pyruvate Kinase M2
c. Insulin
d. Phosphofructokinase
Answer: c. Insulin

21. Which of the following enzymes is defective in galactosemia (a rare, hereditary disorder of carbohydrate metabolism)?
a. Glucokinase
b. Galactose-1-Phosphate Uridyltransferase
c. Galactokinase
d. UDP-Galactose 4- epimerase
Answer: b. Galactose-1-Phosphate Uridyltransferase

22. Which of the following fructose transporter is important in fructose transport in the intestine?
a. GLUT3
b. GLUT4
c. GLUT5
d. GLUT7
Answer: c. GLUT5

23. Which metabolite negatively regulates pyruvate kinase??
a. 6-Bisphosphate
b. Acetyl CoA
c. Alanine
d. Citrate
Answer: c. Alanine

24. Choose the correct statement about the pyruvate is converted into lactate:
a. Lactate acts as the substrate for the formation of amino acid
b. Lactate is the substrate from the downstream pathway
c. During the product of lactate two ATP are produced
d. During lactate formation, NADH is reconverted into NAD
Answer: d. During lactate formation, NADH is reconverted into NAD

25. What is the rate-limiting step of glycolysis??
a. Enolase
b. Phosphohexose isomerase
c. Phosphofructokinase (PFK)
d. Glyceraldehyde-3-phosphate dehydrogenase
Answer: c. Phosphofructokinase (PFK)

26. What is the net gain of ATP per glucose during glycolysis??
a. 4 ATP
b. 5 ATP
c. 2 ATP
d. 1 ATP +1 GTP
Answer: c. 2 ATP

27. Which of the following hormone promotes gluconeogenesis during prolonged starvation?
a. Insulin
b. TSH
c. Glucagon
d. Thyroxine
Answer: c. Glucagon