Multiple Choice
Which of the following structure is found only in archaea?
7. Prokaryotic Cell Structures & Functions
Fimbriae & Hami
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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 many bacteria that are primarily involved in adhesion to surfaces, which is crucial for biofilm formation.
Differentiate between fimbriae and pili: While both are surface structures, pili are typically longer and involved in processes like conjugation, whereas fimbriae are shorter and more numerous, aiding in attachment.
Consider the role of fimbriae in biofilm formation: Biofilms are communities of microorganisms that adhere to surfaces. Fimbriae facilitate the initial attachment of bacteria to surfaces, which is the first step in biofilm development.
Eliminate other options: Conjugation involves the transfer of DNA between bacteria and is typically mediated by pili, not fimbriae. Chemotaxis is the movement of an organism in response to a chemical stimulus and does not directly involve fimbriae.
Conclude that fimbriae's primary role is in biofilm formation due to their adhesive properties, which help bacteria adhere to surfaces and establish biofilms.
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