Biochemistry Questions and Answers – Glycoconjugates: Proteoglycans, Glycoproteins and Glycolipids

This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Glycoconjugates: Proteoglycans, Glycoproteins and Glycolipids”.

1. Which of the following are found in connective tissues?
a) Glycosaminoglycans
b) Proteoglycans
c) Glycoproteins
d) Glycolipids
View Answer

Answer: b
Explanation: Proteoglycans are found in all connective tissues, extracellular matrix and on the surface of many cell surfaces.

2. Which of the following statements is false about proteoglycans?
a) They hold less amount of water
b) Chondroitin sulfate is a proteoglycan
c) They possess charge
d) They are made of amino acids and sugars
View Answer

Answer: a
Explanation: They hold large amounts of water.

3. In cell membranes, carbohydrates in glycoproteins or glycolipids are oriented?
a) Towards outside
b) Towards inside
c) Towards outside and inside
d) Randomly distributed
View Answer

Answer: a
Explanation: The orientation of carbohydrates in glycoproteins is towards outside in cell membranes.
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4. Which of the following is an oligosaccharide linked to protein?
a) Glycolipid
b) Glycoprotein
c) Ganglioside
d) Galactoside
View Answer

Answer: a
Explanation: Glycolipid is linked to lipid.

5. The protein core of proteoglycan is rich in ___________
a) Serine and threonine
b) Serine and methionine
c) Threonine and methionine
d) Alanine and serine
View Answer

Answer: a
Explanation: None.
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6. Which of the following are included in the types of glycolipids?
a) N-acetylgalactosamine
b) N-acetylglucosamine
c) Xylose
d) Cerebrosides
View Answer

Answer: d
Explanation: Cerebrosides are a group of glycosphingolipids, which are the subgroup of glycolipids.

7. Which of the following blood group individuals have N-acetylgalactosamine sugar attachment?
a) A
b) B
c) AB
d) O
View Answer

Answer: a
Explanation: A blood group of individuals have N-acetylgalactosamine sugar attachment.
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8. Which of the following blood group individuals have galactose?
a) A
b) B
c) AB
d) O
View Answer

Answer: b
Explanation: B blood group individuals have galactose.

9. Which of the following glycoprotein functions as a lubricant and protective agent?
a) Collagens
b) Mucins
c) Transferrins
d) Immunoglobulins
View Answer

Answer: b
Explanation: Mucins function as a lubricant and protective agent.
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10. Which of the following are important for white blood cell recognition?
a) Glycosaminoglycans
b) Proteoglycans
c) Glycoproteins
d) Glycolipids
View Answer

Answer: c
Explanation: Especially in mammals glycoproteins are essential for white blood cell recognition.

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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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