Attachment pili do all of the following EXCEPT
A)help bacteria adhere to surfaces.
B)allow bacteria to form a pellicle at the air-water interface of a broth culture.
C)clump blood cells in a process called hemagglutination.
D)prevent the pathogenicity of certain bacteria.

Question

Quizplus · Accepted Answer

Attachment or type IV pili play a crucial role in the ability of bacteria to adhere to surfaces, spread and form colonies, mediate motility, and transfer genetic material between bacterial cells. They also aid in the formation of biofilms and contribute to the pathogenicity of many bacteria. Hemagglutination is often mediated by fimbriae or other surface structures, not by attachment pili. However, attachment pili do not prevent the pathogenicity of certain bacteria; in fact, they often contribute to it.

Attachment Pili Do All of the Following EXCEPT