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Answer: 3. Glycocalyx

The glycocalyx is the outer layer of the bacterial cell envelope, made of polysaccharide (and sometimes protein). It is a slime layer or capsule, and it makes the cell sticky and helps it attach to surfaces.

The plasma membrane and cell wall do not give this stickiness, and bacteria have no nuclear membrane.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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