Quiz Mikrobiologi 1 Virus, Bakteri, Actinomycetes

18 Questions | Total Attempts: 322

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Quiz Mikrobiologi 1 Virus, Bakteri, Actinomycetes


Questions and Answers
  • 1. 
    Viruses are simple, acellular, infectious agents
    • A. 

  • 2. 
    Viruses can reproduce independently from the host cell
    • A. 

      True

    • B. 

      False

  • 3. 
    Viruses are composed of
    • A. 

  • 4. 
    Localized areas of cellular destruction and lysis caused by virus infection are called __________
    • A. 

  • 5. 
    Viruses may harm their host cells by ____________
    • A. 

  • 6. 
    The first step in the animal virus cycle is __________
    • A. 

      Uncoating

    • B. 

      Penetration of the host cell

    • C. 

      Adsorption to the host cell surface

  • 7. 
    Which of the following is true about the G + C content of organisms?
    • A. 

      G + C content of organisms is easily determined

    • B. 

      G + C content is taxonomically valuable

    • C. 

      G + C content indirectly reflects the base sequence of the organism

    • D. 

      All of these are true about the G + C content of organisms.

  • 8. 
    Archaea differ from other bacterial groups in that they have special structural, chemical and metabolic adaptations that enable them to grow in extreme environments
    • A. 

  • 9. 
    Archaea usually grow in a few restricted or specialized habitats, such as
    • A. 

      Anaerobic

    • B. 

      Hypersaline

    • C. 

      Extremely hot

    • D. 

      Exremely cold

    • E. 

      All of these

  • 10. 
    The deinococci are gram-positive cocci and rods that are distinctive in their unusually great resistance to ____________
    • A. 

      Radiation

    • B. 

      Desiccation

    • C. 

      Radiation and desiccation

    • D. 

      Extreme temperatures

  • 11. 
    Which of the following is not a group of photosynthetic bacteria?
    • A. 

      The green bacteria

    • B. 

      The purple bacteria

    • C. 

      The cyanobacteria

    • D. 

      All of these are groups of photosynthetic bacteria

  • 12. 
    The spirochetes include the causative agents for _______
    • A. 

      Syphilis

    • B. 

      Lyme disease

    • C. 

      Both syphilis and Lyme disease.

    • D. 

      Neither syphilis nor Lyme disease.

  • 13. 
    Proteobacteria are gram-negative bacteria of considerable importance as ________
    • A. 

      Disease agents

    • B. 

      Nitrogen fixers

    • C. 

      Major experimental organisms

    • D. 

      All of these

  • 14. 
    Which of the following genera grow symbiotically within root nodules of legumes as nitrogen-fixing bacteroids?
    • A. 

      Agrobacterium

    • B. 

      Rhizobium

    • C. 

      Pseudomonas

    • D. 

      Bacteroides

  • 15. 
    Helicobacter pylori is responsible for ________
    • A. 

      Gastroenteritis.

    • B. 

      Cholera.

    • C. 

      Bacterial dysentery.

    • D. 

      Peptic ulcer disease.

  • 16. 
    The causative agent for cholera in humans is a member of the genus __________
    • A. 

      Escherichia

    • B. 

      Vibrio

    • C. 

      Enterobacter

    • D. 

      Shigella

  • 17. 
    Actinomycetes are the primary source of antibiotics we use in medicine
    • A. 

      True

    • B. 

      False

  • 18. 
    Pseudomonads are a large group of bacteria which can _________
    • A. 

      Spoil refrigerated food

    • B. 

      Cause disease

    • C. 

      Photosynthesize

    • D. 

      A and b

    • E. 

      A and c

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