Multiple choice

Which of the following monosaccharides is a vital part of a biopolymer found in the bacterial cell wall?

  1. Sulfoquinovose

  2. N-Acetylglucosamine

  3. Sialic acids

  4. Glucosamine

  5. Galactosamine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

N-Acetylglucosamine is part of a biopolymer in the bacterial cell wall, built from alternating units of GlcNAc and N-acetylmuramic acid (MurNAc), cross-linked with oligopeptides at the lactic acid residue of MurNAc. This layered structure is called peptidoglycan (formerly called murein).