Biology Cell UHS 2023
PMDC Verified Question 63 of 143
Cell wall of prokaryotic cell is composed of:
A
Carbohydrates
B
Carbohydrates & Proteins
C
Proteins
D
Proteins & Lipids
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Carbohydrates & Proteins
Concept: The bacterial cell wall requires a unique cross-linked structure for immense tensile strength.

Solution: The prokaryotic (bacterial) cell wall is made of peptidoglycan (murein). "Peptido-" refers to short chains of amino acids (proteins/peptides), and "-glycan" refers to long sugar chains (carbohydrates). Thus, it is a complex of both.

Distractor Autopsy: Options listing only carbohydrates (like plant cellulose) or only proteins ignore the essential cross-linked nature of peptidoglycan.

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