Strengthening material of prokaryotic cell wall is__________?
Correct answer: D. Peptidoglycan or Murein.
- A. Cellulose
- B. Chitin
- C. Inorganic salts silica waxes and ligin
- D. Peptidoglycan or Murein.
Explanation
Most bacterial cell walls are strengthened by peptidoglycan, also called murein, a mesh of sugars and peptide cross-links. Cellulose is characteristic of plant cell walls, chitin occurs in fungi and arthropods, and silica or waxes occur in some specialised coverings. Students may choose cellulose because it is associated with cell walls, but bacterial walls use peptidoglycan.
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About Prokaryotic and Eukaryotic Cells
Prokaryotic cells lack a membrane-bound nucleus and complex membrane-bound organelles, whereas eukaryotic cells contain a nucleus, specialized organelles and a cytoskeleton. Comparisons include DNA organization, ribosomes, cell walls, size, division and examples such as bacteria, archaea, protists, fungi, plants and animals.
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