Foundational Microbiology 2: Morphology and Structure
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Questions and Answers

Which staining technique is commonly used to differentiate between gram-negative and gram-positive bacteria?

  • Acid-fast staining
  • Ziehl-Neelsen staining
  • Gram staining (correct)
  • Crystal violet staining
  • What is the function of the peptidoglycan layer in the bacterial cell wall?

  • Give shape to the cell (correct)
  • Attachment to other bacteria or cells
  • Protection against antimicrobial drugs
  • Resistance to osmotic forces
  • Which external structure of bacteria is responsible for movement?

  • Flagella (correct)
  • Glycocalyx
  • Fimbriae
  • Pili
  • What is the basic component of any bacterial cell wall?

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

    Which type of bacteria has an outer membrane in its cell wall?

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

    What is the function of fimbriae in bacteria?

    <p>Attachment to other bacteria or cells</p> Signup and view all the answers

    Which staining technique is used to identify acid-fast bacteria?

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

    What is the function of glycocalyx in bacteria?

    <p>Protection against antimicrobial drugs</p> Signup and view all the answers

    What is the primary stain used in the Gram staining technique?

    <p>Crystal violet</p> Signup and view all the answers

    What is the purpose of the counterstain in the Gram staining technique?

    <p>To stain gram-negative cells pink</p> Signup and view all the answers

    Which bacterial cell structure is characterized by a spherical shape?

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

    Which bacterial cell structure is characterized by a rod shape?

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

    Which bacterial cell structure is characterized by a short rod shape?

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

    Which bacterial cell structure is characterized by a comma shape?

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

    Which bacterial cell structure is characterized by a spiral shape?

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

    Which bacterial cell structure is characterized by a helical shape?

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

    What is the first step in binary fission in bacteria?

    <p>Chromosome replication begins.</p> Signup and view all the answers

    What is the final step in binary fission in bacteria?

    <p>Two daughter cells result.</p> Signup and view all the answers

    What is the process called when bacteria divide by snapping into two daughter cells?

    <p>Snapping division</p> Signup and view all the answers

    What are the spores of actinomycetes called?

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

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