Bacterial Cell Wall Structure Quiz
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Questions and Answers

What is the main function of the bacterial cell wall?

  • To protect the plasma membrane from adverse changes (correct)
  • To store nutrients for the bacterium
  • To help maintain the shape of a bacterium
  • To regulate the entry of substances into the cell
  • Why is the cell wall important clinically?

  • It is responsible for maintaining the shape of the bacterium
  • It regulates the entry of substances into the cell
  • It helps in nutrient storage for the bacterium
  • It contributes to the ability of some species to cause disease (correct)
  • What is the composition of the bacterial cell wall used for?

  • To differentiate major types of bacteria (correct)
  • To maintain the shape of the bacterium
  • To store nutrients for the bacterium
  • To regulate the entry of substances into the cell
  • Which structure does the cell wall serve as a point of anchorage for?

    <p>Flagella (D)</p> Signup and view all the answers

    What is the main function of the Peptidoglycan in the bacterial cell wall?

    <p>To maintain the shape of the bacterium and serve as an anchorage for flagella (B)</p> Signup and view all the answers

    Which type of bacteria has a thicker layer of Peptidoglycan in its cell wall?

    <p>Gram-positive bacteria (B)</p> Signup and view all the answers

    What happens to the plasma membrane and cell wall of a bacterial cell as its volume increases?

    <p>They extend as needed (D)</p> Signup and view all the answers

    What is the significance of the cell wall in relation to disease-causing ability of bacteria?

    <p>It is important for preventing bacterial cells from rupturing (C)</p> Signup and view all the answers

    What is the primary role of the cell wall in preventing bacterial cells from rupturing?

    <p>To protect the fragile plasma membrane from adverse changes in the external environment (C)</p> Signup and view all the answers

    Which component of the bacterial cell wall is used to differentiate major types of bacteria based on their chemical composition?

    <p>Peptidoglycan (D)</p> Signup and view all the answers

    In Gram staining, why do Gram-positive bacteria appear blue-black or purple after being treated with acetone or alcohol?

    <p>Due to their relatively thick layer of Peptidoglycan (A)</p> Signup and view all the answers

    What is the site of action of some antibiotics in bacterial cells?

    <p>Peptidoglycan layer (C)</p> Signup and view all the answers

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