Industrial Processes and Microorganisms in Disease Transmission
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Questions and Answers

What is the primary mechanism by which bacteria cause disease?

  • Bacteria compete with host cells for nutrients
  • Bacteria release toxins that damage host cells (correct)
  • Bacteria induce an excessive immune response in the host
  • Bacteria directly attack and destroy host cells

    • Which of the following is NOT one of the four main shapes of bacteria?

  • Bacilli
  • Spirilla
  • Pleomorphic (correct)
  • Cocci

    • Which of the following is NOT a key step in the Gram staining procedure for classifying bacteria?

  • Applying a counterstain (safranin or basic fuchsin)
  • Applying a primary stain (crystal violet)
  • Applying a decolorizing agent (alcohol or acetone)
  • Incubating the sample in a nutrient-rich medium (correct)

    • Which of the following is a characteristic of Gram-positive bacteria?

    <p>Resistant to certain antibiotics</p> Signup and view all the answers

    What is the primary function of the cell membrane in bacterial cells?

    <p>Act as a selectively permeable barrier</p> Signup and view all the answers

    How do bacteria cause disease?

    <p>By invading tissue and causing physical damage</p> Signup and view all the answers

    Which of the following is a common method used to classify bacteria based on their oxygen requirements?

    <p>Anaerobic culture</p> Signup and view all the answers

    What is the primary way viruses cause disease?

    <p>Taking over the metabolic machinery of cells</p> Signup and view all the answers

    How do fungi primarily cause disease?

    <p>Secreting toxins into tissues</p> Signup and view all the answers

    What is the main mechanism by which protozoa cause disease?

    <p>No set pattern of causing disease</p> Signup and view all the answers

    Which type of microorganism secretes toxins to cause disease?

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

    Which of the following is NOT a characteristic of bacterial cells?

    <p>Presence of a true nucleus</p> Signup and view all the answers

    What is the primary purpose of the Gram staining technique in bacterial identification?

    <p>To differentiate between Gram-positive and Gram-negative bacteria</p> Signup and view all the answers

    Which of the following is NOT a common bacterial cell shape?

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

    Which of the following is a key characteristic that differentiates bacteria from viruses?

    <p>Ability to replicate independently</p> Signup and view all the answers

    What is the primary function of the cell wall in a bacterial cell?

    <p>Provide structural support and protection</p> Signup and view all the answers

    Which of the following is NOT a common method of bacterial classification?

    <p>Presence of chloroplasts</p> Signup and view all the answers

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