Classification of Bacteria Quiz

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Questions and Answers

What unique component is found in the cell wall of gram-positive bacteria?

  • Teichoic Acids (correct)
  • Peptidoglycan
  • Lipopolysaccharide
  • Porins

Which component is specifically associated with the cell wall of gram-negative bacteria?

  • Peptidoglycan
  • Lipopolysaccharide (correct)
  • Mycolic Acid
  • Teichoic Acids

What effect does lysozyme have on microorganisms?

  • Causes loss of cell wall (correct)
  • Destroys the cell membrane
  • Replicates viral DNA
  • Inhibits protein synthesis

Which of the following is NOT a characteristic of gram-positive bacteria?

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

How do the cell walls of gram-positive and gram-negative bacteria primarily differ?

<p>Gram-positive walls have teichoic acids; gram-negative contain lipopolysaccharides (B)</p> Signup and view all the answers

Flashcards

Teichoic Acids

A unique component found only in the cell wall of gram-positive bacteria.

Lipopolysaccharide (LPS)

A component specifically associated with the cell wall of gram-negative bacteria; also known as endotoxin.

Lysozyme

An enzyme that damages bacterial cell walls, leading to cell lysis.

Outer membrane

A characteristic NOT found in gram-positive bacteria that is present in gram-negative bacteria.

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Cell Wall Differences

Gram-positive walls have teichoic acids; gram-negative walls have lipopolysaccharides.

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Study Notes

Classification of Bacteria

  • Gram-positive bacteria have cell walls composed of Teichoic Acids
  • Gram-negative bacteria have cell walls containing Lipopolysaccharide
  • Lysozyme can break down cell walls of microorganisms

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