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Questions and Answers
What is the main difference between a capsule and a slime layer in bacteria?
What is the main difference between a capsule and a slime layer in bacteria?
- Capsules are found only in anthrax bacteria, while slime layers are found in all bacteria.
- Capsules provide protection against phagocytes, while slime layers facilitate adhesion to surfaces.
- Capsules are composed of polysaccharides, while slime layers are composed of polymerized D-glutamic acid.
- Capsules are tightly bound to the cell wall, while slime layers are more loosely attached. (correct)
What is the primary function of the capsule or slime layer in bacteria?
What is the primary function of the capsule or slime layer in bacteria?
- To allow the bacteria to swim more efficiently.
- To produce harmful enzymes that can damage host cells.
- To provide a structural support for the cell wall.
- To enable the bacteria to adhere to surfaces and resist flushing. (correct)
How does the capsule of a bacterium contribute to its virulence?
How does the capsule of a bacterium contribute to its virulence?
- The capsule provides structural support that makes the bacteria more resistant to antibiotics.
- The capsule helps the bacteria produce harmful enzymes that can damage host cells.
- The capsule limits the ability of phagocytes to engulf and destroy the bacteria. (correct)
- The capsule increases the bacteria's ability to change the pH of its environment.
What is the primary function of flagella in bacteria?
What is the primary function of flagella in bacteria?
What is the structure of the S-layer in some bacteria and archaea?
What is the structure of the S-layer in some bacteria and archaea?
What is the primary function of the S-layer in bacteria and archaea?
What is the primary function of the S-layer in bacteria and archaea?
Which characteristic makes bacterial bodies stain red with dyes such as methylene blue?
Which characteristic makes bacterial bodies stain red with dyes such as methylene blue?
What is the structure of the bacterial chromosome as described in the text?
What is the structure of the bacterial chromosome as described in the text?
What is the function of plasmids in bacteria as mentioned in the text?
What is the function of plasmids in bacteria as mentioned in the text?
Where are plasmids usually found in bacteria according to the text?
Where are plasmids usually found in bacteria according to the text?
What is the function of mesosomes during bacterial cell division?
What is the function of mesosomes during bacterial cell division?
What is the specific requirement for growth and multiplication of bacterial cells as described in the text?
What is the specific requirement for growth and multiplication of bacterial cells as described in the text?
What is the main function of flagella in bacteria?
What is the main function of flagella in bacteria?
Which statement about pili (fimbriae) in bacteria is true?
Which statement about pili (fimbriae) in bacteria is true?
Which type of bacteria possesses axial filaments for motility?
Which type of bacteria possesses axial filaments for motility?
What is the composition of flagella in bacteria?
What is the composition of flagella in bacteria?
Why are mutants of Neisseria gonorrhoeae that do not form pili nonpathogenic?
Why are mutants of Neisseria gonorrhoeae that do not form pili nonpathogenic?
Which bacterial structure is important in defining the shape of the cell and giving it mechanical strength?
Which bacterial structure is important in defining the shape of the cell and giving it mechanical strength?
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