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Multiple Choice
Which of the following is a sugar monomer found in peptidoglycan?
A
Ribose
B
N-acetylglucosamine
C
Fructose
D
Galactose
Verified step by step guidance
1
Identify the context of the problem: Peptidoglycan is a structural component of bacterial cell walls, composed of sugar monomers and peptides.
Understand the structure of peptidoglycan: It is made up of repeating units of two sugar derivatives, N-acetylglucosamine (GlcNAc) and N-acetylmuramic acid (MurNAc), linked by β-(1,4)-glycosidic bonds.
Review the options provided: Ribose, N-acetylglucosamine, Fructose, and Galactose.
Eliminate options that are not typically found in peptidoglycan: Ribose is a component of RNA, Fructose is a ketohexose found in fruits, and Galactose is a component of lactose.
Recognize that N-acetylglucosamine is a sugar monomer specifically found in the structure of peptidoglycan, making it the correct answer.