Microbiology: Prokaryotic & Eukaryotic Organisms, Bacterial Cell Structures, Gram Staining, Spore Formation
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Questions and Answers

What is the main function of the bacterial cell wall?

  • To produce energy for the bacteria
  • To store genetic information
  • To help bacteria maintain their shape (correct)
  • To enable bacteria to move and swim

    • Which of the following structures is considered non-essential in a bacterial cell?

  • Capsules (correct)
  • Ribosomes
  • Nuclear apparatus
  • Peptidoglycan

    • What is the difference between the cell walls of gram-positive and gram-negative bacteria?

  • Gram-positive bacteria have an outer layer of lipopolysaccharides (LPS) (correct)
  • Gram-negative bacteria have a thicker layer of peptidoglycan
  • Teichoic acid forms a major surface component in gram-negative bacteria
  • Gram-positive bacteria have a higher percentage of lipopolysaccharides (LPS)

    • Which bacterial arrangement is exemplified by Neisseria gonorrhoeae?

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

    What is the main method by which bacteria multiply?

    <p>Binary fission</p> Signup and view all the answers

    Which of the following is a characteristic of prokaryotic cells?

    <p>Surrounded by rigid cell wall containing peptidoglycan</p> Signup and view all the answers

    What is a distinguishing feature of eukaryotic cells?

    <p>Contain true nucleus with nuclear membrane, nucleoli, and multiple chromosomes</p> Signup and view all the answers

    Which of the following is a common characteristic of both prokaryotic and eukaryotic cells?

    <p>Cells surrounded by rigid cell wall containing peptidoglycan</p> Signup and view all the answers

    What is the distinguishing feature of the cytoplasmic membrane in eukaryotic cells?

    <p>Contain sterols which are not present in prokaryotes except in mycoplasma</p> Signup and view all the answers

    What is a characteristic feature of bacteria classified into orders?

    <p>Each order contains many families</p> Signup and view all the answers

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