Microbial Morphology Quiz
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Questions and Answers

What is the most important differential staining method in Microbiology?

  • Capsule Stain
  • Gram Stain (correct)
  • Endospore Stain
  • Acid-fast Stain
  • Which type of microscope is used to visualize the surface details of microbial cells?

  • Scanning Electron Microscope (correct)
  • Phase-contrast Microscope
  • Light Microscope
  • Transmission Electron Microscope
  • What are the two main types of microorganisms discussed in the lecture?

  • Algae and Viruses
  • Protozoa and Fungi
  • Helminths and Prions
  • Bacteria and Archaea (correct)
  • Which type of cells have a cell wall composed of peptidoglycan?

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

    What is the primary function of the gram stain?

    <p>To differentiate bacteria based on their cell wall structure</p> Signup and view all the answers

    Which staining method is used to detect acid-fast bacteria such as Mycobacterium tuberculosis?

    <p>Acid-fast Stain</p> Signup and view all the answers

    What is the main purpose of the transmission electron microscope (TEM)?

    <p>To visualize internal cellular structures</p> Signup and view all the answers

    Which type of cells lack a true nucleus and membrane-bound organelles?

    <p>Prokaryotic cells</p> Signup and view all the answers

    What is the function of the outer membrane in Gram-negative bacteria?

    <p>Acts as a protective barrier</p> Signup and view all the answers

    Which type of cells are characterized by the presence of pseudomurein in their cell wall?

    <p>Archaeal cells</p> Signup and view all the answers

    What is the primary function of cell appendages in prokaryotic cells?

    <p>Facilitate movement and attachment</p> Signup and view all the answers

    Which staining method is used to visualize the presence of capsules around bacterial cells?

    <p>Capsule Stain</p> Signup and view all the answers

    Which staining method is used to detect acid-fast bacteria such as Mycobacterium tuberculosis?

    <p>Ziehl-Neelsen stain</p> Signup and view all the answers

    What is the main component of the cell wall that gives the bacterial cell its characteristic shape and prevents osmotic lysis?

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

    Which type of bacteria lack a true cell wall composed of peptidoglycan?

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

    What is the function of the outer membrane in Gram-negative bacteria?

    <p>Resistance to phagocytosis</p> Signup and view all the answers

    Which bacterial cell structure acts as an osmotic barrier and is the site of energy production via oxidative phosphorylation?

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

    What is the primary function of the bacterial cell wall?

    <p>Withstand turgor pressure</p> Signup and view all the answers

    Which type of bacteria have many peptidoglycan layers in their cell envelope?

    <p>Gram-positive</p> Signup and view all the answers

    What is the main component of the outer membrane in Gram-negative bacteria?

    <p>Phospholipid-Lipopolysaccharide (LPS)</p> Signup and view all the answers

    What is the primary function of flagella in bacterial cells?

    <p>Motility (chemotaxis)</p> Signup and view all the answers

    Which statement best describes the cell wall of Archaea?

    <p>Composed of S-layer of protein or glycoprotein</p> Signup and view all the answers

    What is the main component of the bacterial chromosome?

    <p>Bacterial genetic information</p> Signup and view all the answers

    Which type of bacteria have a high wax content in their cell envelope?

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

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