Microbiology: Viruses, Fungi, And Protozoa

35 Questions

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Microbiology: Viruses, Fungi, And Protozoa

In the following quiz on the scientific study of microbiology, the practice by which we analyze and record the findings on the many microscopic organisms of the world, we’ll be turning our attention away from the usual main character in this study, biology, and looking more closely at viruses, fungi, and protozoa. Think you know enough about these three suspects? Let’s take a look and see!


Questions and Answers
  • 1. 
    What is the protein coat of a virus called?
    • A. 

      Capsid

    • B. 

      Envelope

    • C. 

      Vector

    • D. 

      RNA

  • 2. 
    Most viruses are obligate intracellular parasites. What bacteria is an example that also shares this replication pattern?
    • A. 

      Bachillus anthracis

    • B. 

      Haemophilus influenzae

    • C. 

      Chlamydia trachomatis

    • D. 

      Mycobacterium tuberculosis

  • 3. 
    Viral nucleic acids can be only single or double-stranded RNA.
    • A. 

      True

    • B. 

      False

  • 4. 
    What is the first step in replication after viral entry into host cytoplasm?
    • A. 

      Release of viral progeny

    • B. 

      DNA breakdown

    • C. 

      Translation of proteins

    • D. 

      MRNA synthesis

  • 5. 
    • A. 

      Viron attaches to the host cell surface and the envelope is engulfed

    • B. 

      Naked viron inject nucleic acid into the host cell

    • C. 

      Viron attaches to host cell receptor and fuses with membrane

    • D. 

      Nucleocapsids assoicate with membrane and bud through

  • 6. 
    What is the correct order of viral replication cycle?
    • A. 

      MRNA synthesis, entry, uncoating, expression, release, assembly

    • B. 

      Penetration, attachment, uncoating, replication, assembly, release

    • C. 

      Attachment, entry, uncoating, replication, assembly, release

    • D. 

      MRNA synthesis, entry, uncoating, expression, assembly, release

  • 7. 
    • A. 

      Nucleus

    • B. 

      Cell membrane

    • C. 

      Cytoplasm

    • D. 

      Nucleus or cytoplasm

  • 8. 
    During which phase of viral replication is the capsid formed?
    • A. 

      Translation

    • B. 

      MRNA synthesis

    • C. 

      Release

    • D. 

      Uncoating

  • 9. 
    What type of virus does NOT replicate inside of the nucleus?
    • A. 

      Adenovirus

    • B. 

      Herpesvirus

    • C. 

      Poxvirus

    • D. 

      Orthomyxovirus

  • 10. 
    What type of viral infection is polio?
    • A. 

      Lytic

    • B. 

      Persistent

    • C. 

      Latent

    • D. 

      Endocytic

  • 11. 
    What is a persistent infection?
    • A. 

      Cell lysis and release of new viruses

    • B. 

      Repetitive insertion of viral mRNA into the host cell membrance

    • C. 

      Cell remains alive and continues to release virus particles at a slow rate

    • D. 

      Virus remains quiescent and the genetic material may be incorporated into host genome

  • 12. 
    Which is NOT an effect of a viral infection?
    • A. 

      Malignant transformation

    • B. 

      Cell death

    • C. 

      Formation of multinucleated cells

    • D. 

      Transcription

  • 13. 
    What attaches to the receptor of the host cell enabling the virus to gain entry into the host?
  • 14. 
    Which is not an example of horizontal transmission?
    • A. 

      Fecal-oral

    • B. 

      Respiratory aerosol

    • C. 

      Breast milk

    • D. 

      Insect bite

  • 15. 
    Viruses evade host defences by decreasing the synthesis of what protein?
    • A. 

      Antibodies

    • B. 

      MHC class I

    • C. 

      MHC class II

    • D. 

      VAP

  • 16. 
    • A. 

      IL-1, TNF

    • B. 

      IL-10, IL-12

    • C. 

      IL-2, IL-5

    • D. 

      IL-4, IL-5

  • 17. 
    What protein(s) composes the cell wall of fungi?
    • A. 

      Cellulose and pectin

    • B. 

      Pepitoglycan

    • C. 

      Silicic acid

    • D. 

      Glucan and chitin

  • 18. 
    • A. 

      Chitin

    • B. 

      Polysaccharides

    • C. 

      Amobae

    • D. 

      Hyphae

  • 19. 
    Fungi are obligate anaerobes.
    • A. 

      True

    • B. 

      False

  • 20. 
    What sterol is present in fungi?
    • A. 

      Cholesterol

    • B. 

      Ergosterol

    • C. 

      Sitosterol

    • D. 

      Phytosterol

  • 21. 
    • A. 

      Superficial

    • B. 

      Subcutaeous

    • C. 

      Systemic

    • D. 

      Cutaneous

  • 22. 
    • A. 

      Filaments

    • B. 

      Yeasts

    • C. 

      Filaments

    • D. 

      Hyphae

  • 23. 
    Fungi can exist as part as the normal flora.
    • A. 

      True

    • B. 

      False

  • 24. 
    • A. 

      Microsporum

    • B. 

      Tichophyton

    • C. 

      Pityrosporum

    • D. 

      Malassezia furfur

  • 25. 
    What is part of fungi do drugs amphotericin B and azole inhibit?
    • A. 

      Hyphae

    • B. 

      Ergosterol

    • C. 

      Chitin

    • D. 

      Glucan

  • 26. 
    • A. 

      Sporotrichosis

    • B. 

      Candida

    • C. 

      Pityrosporum

    • D. 

      Tinea capitis

  • 27. 
    What bacteria causes sporotrichosis?
    • A. 

      Candidia

    • B. 

      Blastomyces dermatitidis

    • C. 

      Leishmania

    • D. 

      Sporothrix schenckii

  • 28. 
    Systemic mycoses are person-to-person communicable.
    • A. 

      True

    • B. 

      False

  • 29. 
    What is fungi that can exist as a mold or yeast?
    • A. 

      Hyphae

    • B. 

      Tinea pedis

    • C. 

      Dimorphic

    • D. 

      Spore

  • 30. 
    What is the most common protozoa found in tropical regions?
    • A. 

      Leishmania

    • B. 

      Plasmodia

    • C. 

      Cryptosporidium

    • D. 

      Malaria

  • 31. 
    What protozoa is exception in undergoing both asexual and sexual reproduction?
    • A. 

      Plasmodium

    • B. 

      Malaria

    • C. 

      Cryptosporidium

    • D. 

      Leishmania

  • 32. 
    What intracellular protozoa is acquire from the mother in utero?
    • A. 

      Trichomonas vaginalis

    • B. 

      Leishmania

    • C. 

      Toxoplasma

    • D. 

      Plasmodium

  • 33. 
    • A. 

      Brain

    • B. 

      Muscle

    • C. 

      Blood

    • D. 

      Epithelium

  • 34. 
    • A. 

      Fecal-oral

    • B. 

      Sexual

    • C. 

      Insect

    • D. 

      Oral-fecal

  • 35. 
    Protozoa reproduction is usually asexual in humans and insects.
    • A. 

      True

    • B. 

      False