18 Questions
What is the function of plasmids in bacteria?
Encode accessory genes for improved virulence
How do bacteria attach to solid surfaces?
Using pili
What is the main component of the Gram-negative cell wall?
Lipopolysaccharide
In bacterial replication, what is responsible for maintaining the outer membrane?
Lipopolysaccharide
What function do pili serve in bacteria?
To mediate interactions with other cells
What is the role of peptidoglycan in the bacterial cell wall?
Bind layers of peptinoglycan together
What provides rigidity and shape to bacterial and archaeal cells?
Peptidoglycan
Which structure is important for bacterial cells to bind to specific receptors?
Fimbria
In bacterial cells, what is the function of lipoteichoic acid?
Anchor peptidoglycan to the cytoplasmic membrane
What is the function of Core-Connects Lipid A to polysaccharide 3.0 in bacterial cells?
Covers cell wall with immunologically distinct side chains
What is the main purpose of the PMF (proton motive force) in bacterial cells?
To power the flagella motor
Which component of the bacterial cell wall is responsible for forming a lattice structure with cross-linked peptides and sugar chains?
Peptidoglycan
What is the main function of plasmids in bacterial cells?
Allow bacterial replication
What is the significance of fimbria in bacterial cells?
Attachment to bacteria
What is the function of the Hook and Rod proteins in bacterial cells?
To act as a motor switch
Which feature makes Gram-negative bacteria appear red or pink in a Gram stain?
Mot proteins
What is the role of ethanolamine in bacterial flagella?
Pushes the filament in a single direction
Why are Gram-positive bacteria harder to wash crystal violet from compared to Gram-negative bacteria in a Gram stain?
Their cell wall has pores that constrict solute leakage
Test your knowledge of bacterial cell structure and function, including topics such as cell wall composition, plasmid DNA replication, and gene encoding for improved virulence. Explore the roles of outer membrane, periplasm, and cytoplasmic membrane in bacterial cells.
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