Microbiology: Bacterial Cell Structure Group Quiz
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Microbiology: Bacterial Cell Structure Group Quiz

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@FieryOwl

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Questions and Answers

What are the essential components of bacterial cells?

  • Cytoplasm, cell membrane, and cell wall (correct)
  • Ribosomes, golgi apparatus, and lysosomes
  • Starch, cellulose, and chlorophyll
  • Nucleus, mitochondria, and endoplasmic reticulum

    • Bacterial cell walls are made from what macromolecule?

  • Lipid bilayer
  • Cellulose
  • Peptidoglycan (correct)
  • Chitin

    • What is the major function of the cell wall in bacterial cells?

  • To store genetic material
  • To provide structural support and shape to the cell (correct)
  • To regulate the entry and exit of molecules
  • To carry out photosynthesis

    • What bacteria lack a cell wall?

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

    What is the structure of Gram-positive cell walls primarily composed of?

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

    Which macromolecule forms the primary component of Gram-negative cell walls?

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

    What are the components of the lipopolysaccharide (LPS)?

    <p>Lipid A, core polysaccharide, O-specific polysaccharide</p> Signup and view all the answers

    What are the two types of pili and what are their functions?

    <p>Fimbriae for attachment and sexual pili for motility</p> Signup and view all the answers

    What important enzyme is found in the periplasmic space of gram-negative bacteria?

    <p>Penicillin-binding protein (PBP)</p> Signup and view all the answers

    What metabolically inactive structure formed by certain bacteria is resistant to environmental stresses?

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

    Bacterial capsules are typically made from what macromolecule?

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

    What are the two functions of a bacterial capsule?

    <p>Protection and biofilm formation</p> Signup and view all the answers

    What type of bacteria has teichoic and lipoteichoic acid?

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

    What are the three basic groups into which bacteria are classified based on shape?

    <p>Cocci, bacilli, spirilla</p> Signup and view all the answers

    Which enzyme is used by some bacteria to resist environmental stresses?

    <p>Superoxide dismutase</p> Signup and view all the answers

    What structure do some bacteria form to resist environmental stress?

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

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