Cyanobacteria have ________ cell wall?
Correct answer: B. Gram - ve.
- A. Gram +ve.
- B. Gram - ve.
- C. Acid fast
- D. Cellulose rich
Explanation
Cyanobacteria have a Gram-negative-type cell envelope, with a thin peptidoglycan layer and an outer membrane. The likely mistake is choosing Gram-positive because cyanobacteria perform photosynthesis like some familiar Gram-positive-looking organisms, but their envelope structure is Gram-negative.
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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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