Multiple choice

Peptidoglycan is a polymer forming the cell wall of bacteria. What are its major components?

  1. Only proteins

  2. Amino acids and sugar

  3. Large number of polymers

  4. Only lipids
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Peptidoglycan consists of sugar derivatives (N-acetylglucosamine and N-acetylmuramic acid) cross-linked by short peptide chains of amino acids. This mesh-like structure provides strength to bacterial cell walls.

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