Question

question 45
the rigid barrier that surrounds bacteria is the:
a glycocalyx
b flagellum
c cell wall
d cell membrane
e cytoplasm

Explanation:

To solve this, we analyze each option:

• Option A: Glycocalyx is a glycoprotein - polysaccharide covering, not a rigid barrier.
• Option B: Flagellum is for bacterial movement, not a rigid barrier.
• Option C: The cell wall of bacteria is a rigid structure that surrounds the cell, providing shape and protection.
• Option D: Cell membrane is a flexible, semi - permeable membrane, not rigid.
• Option E: Cytoplasm is the internal fluid - filled region, not a surrounding barrier.

Answer:

C. Cell wall