The structures that help some bacteria to att | vedclass

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(D) : Fimbriae are small bristle-like solid structures arising from the bacterial cell surface. There are $300-400$ fimbriae per cell. Their diameter

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fimbriae

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(D) : Fimbriae are small bristle-like solid structures arising from the bacterial cell surface. There are $300-400$ fimbriae per cell. Their diameter is $3-10 \ nm$ while their length is $0.5-1.5 \ \mu m$. Fimbriae are involved in attaching bacteria to solid surfaces (e.g.,rocks in a water body) or host tissues (e.g.,the urinary tract in $Neisseria \ gonorrhoeae$). Some fimbriae cause the agglutination of $RBCs$. They also help in the mutual clinging of bacteria.

The structures that help some bacteria to attach to rocks and/or host tissues are

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