MCQ
The structures that help some bacteria to attach to rocks and/or host tissues are
- Amesosomes
- Bholdfast
- Crhizoids
- ✓fimbriae.
✓
Answer
Correct option: D.
fimbriae.
d
(d) : Fimbriae are small bristlelike solid structures arising from bacterial cell surface. There are $300-400$ of fimbriae per cell. Their diameter is $3-10\ nm$ while length is $0.5-1.5\ \mu m$. Fimbriae are involved in attaching bacteria to solid surfaces ( $e.g.$, rock in water body) or host tissues ( $e.g.$, urinary tract in Neisseria gonorrhoeae). Some fimbriae cause agglutination of $RBCs$. They also help in mutual clinging of bacteria.
(d) : Fimbriae are small bristlelike solid structures arising from bacterial cell surface. There are $300-400$ of fimbriae per cell. Their diameter is $3-10\ nm$ while length is $0.5-1.5\ \mu m$. Fimbriae are involved in attaching bacteria to solid surfaces ( $e.g.$, rock in water body) or host tissues ( $e.g.$, urinary tract in Neisseria gonorrhoeae). Some fimbriae cause agglutination of $RBCs$. They also help in mutual clinging of bacteria.
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