Atypical Prokaryotic Cells: Rickettsia and Mycoplasma
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Questions and Answers

Which of the following is true about Rickettsia?

  • It can grow on artificial media
  • It cannot survive, carry out metabolism, or multiply outside a host cell (correct)
  • It is a gram-positive bacteria
  • It primarily causes diseases in plants

    • Which disease is caused by Rickettsia rickettsii?

  • Zika Virus
  • Rocky Mountain Spotted Fever (correct)
  • Malaria
  • Cholera

    • What are the signs and symptoms of Rocky Mountain Spotted Fever?

  • Fever, headache, rash, nausea, vomiting, muscle pain (correct)
  • Skin rash, joint pain, fatigue
  • Cough, runny nose, sore throat
  • Diarrhea, abdominal pain, loss of smell and taste

    • What type of bacteria is Rickettsia?

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

    What are the characteristics of atypical prokaryotic cells?

    <p>They are obligate intracellular parasites</p> Signup and view all the answers

    What is the size range of Rickettsia cells?

    <p>0.3 to 0.5 µm in diameter and 0.8 to 2.0 µm long</p> Signup and view all the answers

    How do Rickettsia cells reproduce?

    <p>By binary fission inside the cytoplasm of cells</p> Signup and view all the answers

    What is the main characteristic of atypical prokaryotic cells like Rickettsia?

    <p>They cannot function without essential factors from the host</p> Signup and view all the answers

    What type of bacteria are Rickettsias?

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

    How do Rickettsia cells behave on artificial media?

    <p>They do not grow on artificial media</p> Signup and view all the answers

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