Which of the following components provides sticky character to the bacterial cell?
Answer: (D) Glycocalyx. Answer: (D) Glycocalyx Solution: The outermost layer of the bacterial cell envelope is the glycocalyx, which may be a loose slime layer or a thick tough capsule and gives the cell its sticky, adhesive character.
- A.Cell wall
- B.Nuclear membrane
- C.Plasma membrane
- D.Glycocalyx✓
Correct Answer
(D) Glycocalyx
Solution & Explanation
Answer: (D) Glycocalyx Solution: The outermost layer of the bacterial cell envelope is the glycocalyx, which may be a loose slime layer or a thick tough capsule and gives the cell its sticky, adhesive character. The cell wall provides shape and structural support, while the plasma membrane is selectively permeable, so neither imparts stickiness. Thus glycocalyx is correct. NCERT Reference: Ch 8, p.90, lines 34-36: "Glycocalyx differs in composition and thickness among different bacteria. It could be a loose sheath called the slime layer in some, while in others it may be thick and tough, called the capsule."