Multiple Choice
A mutation of a sigma factor in a bacterium would most likely affect the:
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1. Introduction to Microbiology
Members of the Bacterial World
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Which of the following are the short, numerous appendages used by some bacteria for attachment to surfaces?
A
Pili
B
Fimbriae
C
Flagella
D
Capsules
Verified step by step guidance1
Understand the function and structure of each bacterial appendage listed: Pili, Fimbriae, Flagella, and Capsules.
Recall that Pili are typically longer and fewer in number, often involved in DNA transfer between bacteria (conjugation).
Recognize that Flagella are long, whip-like structures used primarily for bacterial motility (movement).
Identify that Capsules are thick, gelatinous layers surrounding some bacteria, mainly for protection and preventing desiccation, not for attachment.
Conclude that Fimbriae are the short, numerous appendages that bacteria use specifically for attachment to surfaces, distinguishing them from the other structures.
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