Carbohydrates Multiple Choice Questions MCQs with Answers

1. Cellulose is a polymer of:
a. Fructose
b. Sucrose
c. Glucose
d. Xylans
Answer: c. Glucose

2. Where is glycogen stored?
a. Liver and muscle
b. Liver only
c. muscles only
d. Pancreas
Answer: b. Liver only

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

4. Carbohydrate metabolism is controlled by:
a. Paratharmone
b. Insulin
c. Glucose
d. Vitamin B12
Answer: b. Insulin

5. How many major groups of carbohydrates are there?
a. Three
b. Four
c. Five
d. Seven
Answer: a. Three

6. α-D-glucose and β-D-glucose are:
a. Stereoisomer
b. Epimers
c. Anomers
d. Keto-Aldo pairs
Answer: c. Anomers

7. Which is a non-reducing sugar?
a. Isomaltose
b. Maltose
c. Lactose
d. Trehalose
Answer: d. Trehalose

8. The linkage between two monosaccharides is known as:
a. Glycosidic bond
b. peptide bond
c. hybrid bond
d. none of above
Answer: a. Glycosidic bond

Recommended: Carbohydrates Online Practice Test

9. Glucose is commonly known as:
a. Sucrose
b. Table sugar
c. Table salt
d. Dextrose
Answer: d. Dextrose

10. The constituent unit of insulin is:
a. Glucose
b. Fructose
c. Maltose
d. Galactose
Answer: b. Fructose

11. Which of the following is heteroglycan?
a. Dextrin
b. Agar
c. Insulin
d. Chitin
Answer: b. Agar

12. When all Monosaccharides in a Polysaccharide are the same type then the polysaccharide is called
a. Oligosaccride
b. Glycogen
c. Homoglycan
d. Heteroglycan
Answer: c. Homoglycan

13. Linkage between two Monosaccharide is:
a. Ionic bond
b. Covalent bond
c. Hydrogen bond
d. Glycosidic bond
Answer: d. Glycosidic bond

14. Sucrose is commonly known as:
a. Table sugar
b. Dextrose
c. Amylose
d. Blood sugar
Answer: a. Table sugar

15. Which of the following carbohydrate belong to a group of complex biomolecules commonly regarded as “the staff of life”?
a. Proteins
b. Lipids
c. Carbohydrates
d. Vitamins
Answer: c. Carbohydrates

16. Choose the correct simplest form of carbohydrates?
a. Alcohol and Carboxyl groups
b. Carboxyl groups
c. Aldehyde and Ketone groups
d. Hydroxyl groups and Hydrogen groups
Answer: c. Aldehyde and Ketone groups

17. Which of the following monosaccharides is the most abundant found in the human body?
a. C-type
b. L-type
c. T-type
d. D-type
Answer: d. D-type

18. Which of the following is the most abundant bio-molecule on the earth??
a. Proteins
b. Lipids
c. Carbohydrates
d. Nucleic acids
Answer: c. Carbohydrates

19. What are the primary functions of carbohydrates?
a. Provide energy
b. Store energy
c. Build macromolecules
d. All of these
Answer: d. All of these

20. Choose the Incorrect statement about sugar alcohol:
a. A linear molecule that cannot cyclize
b. Addition of -itol as a suffix
c. Carbonyl groups reduced to a hydroxyl group
d. Terminal -OH group oxidizes
Answer: d. Terminal -OH group oxidizes

21. Choose the correct general formula for carbohydrates:
a. (C6H2O)n
b. (C4H2O)n
c. (C2H2O)n COOH
d. (CH2O)n
Answer: d. (CH2O)n

22. Which of the following carbohydrates is a triose??
a. Ribose
b. Glucose
c. Glyceraldehyde
d. Ribulose
Answer: c. Glyceraldehyde

23. Which of the following is a reducing sugar and also common dietary monosaccharides?
a. Galactose
b. Glucose
c. Fructose
d. All of these
Answer: d. All of these

24. Choose the correct example of Epimers:
a. Glucose and Galactose
b. Galactose, Mannose and Glucose
c. Glucose, Ribose and Mannose
d. Glucose and Ribose
Answer: a. Glucose and Galactose

25. Molisch’s test is a chemical test that is used to check…?
a. The presence of carbohydrates
b. The presence of proteins
c. The presence of lipids
d. The presence of vitamins
Answer: a. The presence of carbohydrates

26. Which of the following is the simplest carbohydrate??
a. Glucose
b. Glyceraldehyde
c. Maltose
d. Sucrose
Answer: b. Glyceraldehyde

27. In maltose, the glycosidic linkage is present between the two glucose units at what positions?
a. 1, 2
b. 1, 1
c. 1, 4
d. 1, 3
Answer: c. 1, 4

28. Lactose, a disaccharide, is a sugar composed of…?
a. Glucose and Fructose
b. Sucrose and Glucose
c. Galactose and Glucose
d. Ribose and Glucose
Answer: c. Galactose and Glucose

29. Two monosaccharides combine to form a disaccharide by removing…?
a. One molecule of oxygen
b. One molecule of water
c. One molecule of carbon
d. One molecule of hydrogen
Answer: b. One molecule of water

30. Class of carbohydrates that cannot be hydrolyzed to simpler carbohydrates, is known as?
a. Polysaccharides
b. Disaccharides
c. Proteoglycan
d. Monosaccharide
Answer: d. Monosaccharide

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