micro 3
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Questions and Answers

What is the main role of flagella in bacteria?

  • Protein synthesis
  • Cell division
  • Bacterial motility (correct)
  • DNA replication
  • Which bacterial external cell component is responsible for contributing to the structural integrity of bacterial cells?

  • Pili
  • Nucleoid
  • Capsules
  • Lipopolysaccharide (LPS) (correct)
  • What is the primary function of the peptidoglycan layer in bacteria?

  • Protein synthesis
  • Cell division
  • Cell motility
  • Regulating particle size through the cell wall (correct)
  • Which component is NOT found in the bacterial plasma membrane?

    <p>Cholesterol</p> Signup and view all the answers

    What can a high LPS content result in during sterile manufacturing?

    <p>Increased endotoxemia risk</p> Signup and view all the answers

    Which part of the bacterial external cell components is involved in retaining the cytoplasm and segregating the internal environment?

    <p>Plasma membrane</p> Signup and view all the answers

    Which bacterial structure is commonly associated with forming spores as a survival mechanism?

    <p>Nucleoid</p> Signup and view all the answers

    What is the primary function of bacterial ribosomes?

    <p>Energy production</p> Signup and view all the answers

    Which bacterial cell structure can be viewed using phase contrast microscopy or staining?

    <p>Flagella</p> Signup and view all the answers

    In bacterial cells, which component is targeted by antibiotics due to its differences from eukaryotic counterparts?

    <p>Pilli</p> Signup and view all the answers

    Which bacterial structure is essential for forming dense mycelial mats?

    <p>LPS (lipopolysaccharide)</p> Signup and view all the answers

    What bacterial component is metabolically inert and aids in resistance against adverse conditions?

    <p>Slime layers</p> Signup and view all the answers

    What is the primary function of pilli in bacterial cells?

    <p>DNA transfer during conjugation</p> Signup and view all the answers

    Which of the following bacterial structures is involved in bacterial motility?

    <p>Flagella</p> Signup and view all the answers

    What is the primary function of nucleoid in bacterial cells?

    <p>Genetic material storage</p> Signup and view all the answers

    Which bacterial structure is responsible for providing protection and adherence to surfaces?

    <p>Capsules</p> Signup and view all the answers

    In sterile manufacturing processes, which bacterial component needs to be strictly controlled to prevent endotoxin contamination?

    <p>LPS</p> Signup and view all the answers

    Which bacterial structure is responsible for providing structural support and regulating cell shape?

    <p>Cell wall</p> Signup and view all the answers

    Which bacterial external cell component is involved in the transfer of DNA between two bacteria?

    <p>Pilli</p> Signup and view all the answers

    What is the main function of flagella in V. cholerae and H. pylori?

    <p>Propelling the bacteria</p> Signup and view all the answers

    What is the main component of bacterial genetic material that is not membrane-bound?

    <p>Nucleoid</p> Signup and view all the answers

    Which bacterial external cell component can help in attaching the bacteria to surfaces?

    <p>Slime layers</p> Signup and view all the answers

    What is the characteristic that distinguishes capsules from slime layers?

    <p>When organized and permanent</p> Signup and view all the answers

    Which bacterial internal cell component can replicate autonomously within the host?

    <p>Plasmids</p> Signup and view all the answers

    What is the main function of pili in bacterial cells?

    <p>Facilitate genetic exchange between bacteria</p> Signup and view all the answers

    Which of the following statements about flagella in bacterial cells is correct?

    <p>Flagella are used for attachment to host cells during infection.</p> Signup and view all the answers

    What term is used to describe the region in a bacterial cell where genetic material is located?

    <p>Nucleoid</p> Signup and view all the answers

    Which of the following is a function of capsules and slime layers in bacterial cells?

    <p>Protect the cell from dehydration</p> Signup and view all the answers

    What is the role of LPS (lipopolysaccharide) content control in sterile manufacturing processes?

    <p>Prevent microbial contamination in pharmaceutical products</p> Signup and view all the answers

    In bacterial cells, which structure is involved in adherence to surfaces and host tissues?

    <p>Pili</p> Signup and view all the answers

    What is the primary function of pili in bacterial cells?

    <p>Adherence to surfaces and host tissues</p> Signup and view all the answers

    What bacterial component is metabolically inert and aids in resistance against adverse conditions?

    <p>Bacterial endospores</p> Signup and view all the answers

    Which bacterial structure is essential for forming dense mycelial mats?

    <p>Hyphae</p> Signup and view all the answers

    In bacterial cells, which component is targeted by antibiotics due to its differences from eukaryotic counterparts?

    <p>Ribosomes</p> Signup and view all the answers

    What is the main function of peptidoglycan in bacterial cells?

    <p>Providing structural support and regulating cell shape</p> Signup and view all the answers

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