Bacterial Cell Structure Quiz
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Questions and Answers

Which of the following is NOT a factor affecting bacterial growth?

  • pH
  • Availability of water (correct)
  • Temperature
  • Oxygen concentration
  • What is the process of endospore formation in bacteria?

  • The DNA replicates and the new DNA moves to one end of the cell (correct)
  • The original cell bursts, releasing the endospore
  • A thick, resistant wall then surrounds the new DNA
  • The contents of the endospore shrink as water is removed and its metabolism stops
  • Which type of bacteria obtain their energy from other chemical reactions and not light?

  • Saprophytic bacteria
  • Chemosynthetic bacteria (correct)
  • Photosynthetic bacteria
  • Parasitic bacteria
  • What is the main function of antibiotics?

    <p>To kill microorganisms</p> Signup and view all the answers

    What is the main cause of antibiotic resistance?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is an example of a beneficial use of bacteria?

    <p>Production of antibiotics</p> Signup and view all the answers

    What is the purpose of a batch process in bioprocessing?

    <p>To allow growth up to a certain point</p> Signup and view all the answers

    What is the purpose of a continuous process in bioprocessing?

    <p>To continuously add nutrients to the bioreactor</p> Signup and view all the answers

    What is the temperature range at which most mammalian bacteria function best?

    <p>35-40°C</p> Signup and view all the answers

    What is the pH at which most bacteria function best?

    <p>pH 7</p> Signup and view all the answers

    Which structure of a bacterial cell is responsible for protecting the bacteria from mechanical damage and osmotic rupture?

    <p>Cell Wall</p> Signup and view all the answers

    What is the function of plasmids in a bacterial cell?

    <p>Contain genetic information</p> Signup and view all the answers

    Which structure in a bacterial cell contains the genomic DNA?

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

    Which of the following shapes can bacteria have?

    <p>All of the above</p> Signup and view all the answers

    How does binary fission occur in bacteria?

    <p>The bacteria pinches in its cell membrane and the cell wall grows across the middle</p> Signup and view all the answers

    During which phase of bacterial growth do the bacteria adjust to their surroundings and prepare for reproduction?

    <p>Lag phase</p> Signup and view all the answers

    In which phase of bacterial growth does reproduction begin and the population can grow exponentially?

    <p>Log phase</p> Signup and view all the answers

    What is the average reproduction time for species like E.coli under ideal conditions?

    <p>20 minutes</p> Signup and view all the answers

    Why are bacteria classified as prokaryotes?

    <p>They do not have a nuclear membrane or membrane-bound organelles</p> Signup and view all the answers

    What is the function of the flagellum in a bacterial cell?

    <p>Allow the bacteria to move</p> Signup and view all the answers

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