Multiple Choice
__________ is the slime-like layer of polysaccharides on the outer surface of bacterial cells.
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26. Prokaryotes
Prokaryotic Cell Structure
Multiple Choice
The presence of fimbriae on a bacterial cell is most likely to have a critical role in
A
Conjugation
B
Chemotaxis
C
Biofilm formation
D
DNA replication
Verified step by step guidance1
Understand the function of fimbriae: Fimbriae are hair-like appendages on the surface of bacterial cells that are primarily involved in adhesion to surfaces, which is crucial for biofilm formation.
Differentiate between the given options: Conjugation involves the transfer of DNA between bacteria, chemotaxis is the movement of an organism in response to a chemical stimulus, and biofilm formation involves the aggregation of bacteria on a surface.
Analyze the role of fimbriae in each process: Fimbriae are not directly involved in conjugation or chemotaxis, but they play a significant role in biofilm formation by allowing bacteria to adhere to surfaces and to each other.
Consider the biological significance: Biofilms provide a protective environment for bacteria, enhancing their survival and resistance to environmental stresses, which is facilitated by the presence of fimbriae.
Conclude the analysis: Based on the function of fimbriae and their role in adhesion, the presence of fimbriae on a bacterial cell is most likely to have a critical role in biofilm formation.
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