Biochemistry Questions and Answers – Polysaccharides

This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Polysaccharides”.

1. Which of the following is an example of bacterial and yeast polysaccharide?
a) Starch
b) Glycogen
c) Cellulose
d) Dextrans
View Answer

Answer: d
Explanation: Dental plaque formed by bacteria on the surface of teeth is rich in dextrans.

2. In which of the following, glucose residues are linked by β1 &arr; 4 glycosidic bonds?
a) Amylose
b) Starch
c) Cellulose
d) Glycogen
View Answer

Answer: c
Explanation: The glucose residues in cellulose are linked by β1 &arr; 4 glycosidic bonds, in contrast to the α1 &arr; 4 bonds of amylose, starch and glycogen.

3. What is the chemical difference between cellulose and chitin?
a) Replacement of the hydroxyl group at C2 with an acetylated amino group
b) Replacement of the hydroxyl group at C3 with an acetylated amino group
c) Replacement of the hydroxyl group at C4 with an acetylated amino group
d) Replacement of the hydroxyl group at C5 with an acetylated amino group
View Answer

Answer: a
Explanation: Chitin is a linear homopolysaccharide composed of N-acetylglucosamine residues in β linkage.

4. When all the monosaccharides in a polysaccharide are same type, such type of a polysaccharide is called a ___________
a) Glycogen
b) Homoglycan
c) Heteroglycan
d) Oligosaccharide
View Answer

Answer: b
Explanation: Homoglycan is a polysaccharide where all the monosaccharides are same type.

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5. In which of the following forms, glucose is stored in plants?
a) Glycogen
b) Starch
c) Dextrin
d) Cellulose
View Answer

Answer: b
Explanation: Starch is the storage form of glucose in plants.

6. In which of the following forms, glucose is stored in the liver?
a) Glycogen
b) Starch
c) Dextrin
d) Cellulose
View Answer

Answer: a
Explanation: Glucose in the form of glycogen is stored in the liver and muscles.

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7. Which of the following are the storage polysaccharides?
a) Glycogen
b) Cellulose
c) Chitin
d) Glucose
View Answer

Answer: a
Explanation: Starch and glycogen are known as storage polysaccharides.

8. Which of the following are the structural polysaccharides?
a) Glycogen
b) Starch
c) Chitin
d) Glucose
View Answer

Answer: c
Explanation: Chitin and cellulose are known as structural polysaccharides.

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9. Which of the following is an analogous to starch?
a) Cellulose
b) Glycogen
c) Sucrose
d) Chitin
View Answer

Answer: b
Explanation: Glycogen is also known as animal starch.

10. Which of the following is not a monosaccharide with 5 carbon atoms?
a) Arabinose
b) Xylulose
c) Trehalose
d) Ribulose
View Answer

Answer: c
Explanation: Trehalose is a disaccharide.

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Sanfoundry Global Education & Learning Series – Biochemistry.

To practice all areas of Biochemistry, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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