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Questions and Answers

What is a defining feature of bacterial cell walls?

  • They are made of cellulose.
  • They contain membrane-bound organelles.
  • They provide strength and rigidity. (correct)
  • They are flexible and change shape frequently.
  • Which shape is commonly associated with bacilli bacteria?

  • Rod-shaped (correct)
  • Spiral
  • Spherical
  • Cylindrical
  • What is the average diameter of spherical bacteria?

  • 5.0-10.0 µm
  • 2.0-4.0 µm
  • 0.5-2.0 µm (correct)
  • 0.1-0.5 µm
  • How do bacteria commonly reproduce?

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

    What type of bacterial arrangement involves cells that stick together in clusters?

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

    Which of the following is a characteristic feature of the bacterial genome?

    <p>Circular bacterial chromosome.</p> Signup and view all the answers

    Which process allows for the transfer of plasmids between bacterial cells?

    <p>Bacterial conjugation.</p> Signup and view all the answers

    What is the approximate size range for rod-shaped bacteria?

    <p>1-10 µm in length and 0.25-1.0 µm in diameter.</p> Signup and view all the answers

    What are the three basic shapes of bacteria?

    <p>Coccus, bacillus, and spiral</p> Signup and view all the answers

    Which arrangement describes cocci that are found in pairs?

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

    Which term describes cocci that are found in clusters resembling grapes?

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

    What is the structure of bacilli that appear in chains called?

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

    Which type of bacteria can vary in shape and are referred to as pleomorphic?

    <p>None of the above</p> Signup and view all the answers

    What is the typical range in diameter for eukaryotic cells such as plants and animals?

    <p>10 to 50 µm</p> Signup and view all the answers

    Which type of cocci are formed in cubes of eight due to divisions in three planes?

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

    Which of the following is NOT a shape of bacteria?

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

    What is the primary characteristic that distinguishes prokaryotic cells from eukaryotic cells?

    <p>Circular DNA structure</p> Signup and view all the answers

    Which of the following is NOT a defining characteristic of Archaea?

    <p>Presence of a true nucleus</p> Signup and view all the answers

    Which of the following statements about bacterial cell shape is correct?

    <p>Bacterial cells can have various shapes, including spherical and rod-shaped.</p> Signup and view all the answers

    What is the typical size range for bacterial cells?

    <p>0.5 to 5 micrometers</p> Signup and view all the answers

    Which arrangement of bacterial cells describes chains of cocci?

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

    Which type of bacteria is characterized by a rod shape?

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

    What distinguishes prokaryotic ribosomes from eukaryotic ribosomes?

    <p>Prokaryotic ribosomes are simpler in structure.</p> Signup and view all the answers

    How do bacterial cells generate energy, given they lack mitochondria?

    <p>Via their cytoplasmic membrane</p> Signup and view all the answers

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