Scelta multipla
Which of these are true about pili?
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7. Prokaryotic Cell Structures & Functions
Pili
Scelta multipla
Which of the following is NOT a function of pili?
A
Gliding motility of cells
B
Conjugation (DNA transfer)
C
Antibiotic resistance
D
Twitching motility of cells
E
All are functions of pili
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Understand the primary functions of pili in bacteria. Pili are hair-like structures on the surface of bacterial cells that play roles in attachment, motility, and genetic exchange.
Recognize that pili are involved in conjugation, which is the process of DNA transfer between bacterial cells. This is a well-known function of pili.
Identify that pili are also involved in twitching motility, a type of movement that allows bacteria to move across surfaces.
Consider the role of pili in gliding motility. While not all bacteria with pili exhibit gliding motility, some do use pili for this purpose.
Evaluate the statement about antibiotic resistance. While pili can facilitate the transfer of genetic material that may include antibiotic resistance genes, the pili themselves do not directly confer antibiotic resistance. This is a key distinction in understanding their function.
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