Microbiology Exam Prep V1

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Microbiology Quizzes & Trivia
Microbiology ese prep

  
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  • 1. 
    All of the following statements about fungi are true except
    • A. 

      Fungi are heterotrophic

    • B. 

      Most fungi are aerobic

    • C. 

      All fungi have eurocaryotic cells

    • D. 

      All fungi are unicellular

    • E. 

      Few fungi are pathogenic to humans


  • 2. 
    Yeast infections are caused by
    • A. 

      Candida albicans

    • B. 

      Histoplasma capsulatum

    • C. 

      Saccharomyces cerevisiae

    • D. 

      Penicillium

    • E. 

      Aspergillus


  • 3. 
    Fungi, more often than bacteria, are responsible for decomposition of plant material because
    • A. 

      They have fermentative metabolism

    • B. 

      They are aerobic

    • C. 

      They cannot tolerate high osmotic pressure

    • D. 

      They can tolerate low-moisture conditions

    • E. 

      They prefer a neutral environment (pH 7)


  • 4. 
    Which spore is in a sac and results from the fusion of two nuclei from different strains of the same fungi? 1-Arthrospore 2-Ascospore 3-Basidiospore 4-Blastospore 5-Chlamydospore 6-Conidiospore 7-Sporangiospore 8-Zygospore
    • A. 

      6

    • B. 

      1

    • C. 

      2

    • D. 

      4

    • E. 

      8


  • 5. 
    Which is a thick-walled spore formed as a segment within a hypha? 1-Arthrospore 2-Ascospore 3-Basidiospore 4-Blastospore 5-Chlamydospore 6-Conidiospore 7-Sporangiospore 8-Zygospore
    • A. 

      None

    • B. 

      5

    • C. 

      7

    • D. 

      3

    • E. 

      1


  • 6. 
    Which of these spores are asexual spores? 1-Arthrospore 2-Ascospore 3-Basidiospore 4-Blastospore 5-Chlamydospore 6-Conidiospore 7-Sporangiospore 8-Zygospore
    • A. 

      1,3,5,8

    • B. 

      All

    • C. 

      2,3,6,8

    • D. 

      1,4,5,6,7

    • E. 

      2,4,6,7,8


  • 7. 
    Which of the following statements is false?
    • A. 

      Fungal spores are resting spores to protect the fungus from adverse environmental conditions

    • B. 

      Fungal spores are for reproduction

    • C. 

      Fungi produce sexual spores

    • D. 

      Fungi produce asexual spores

    • E. 

      Fungal spores are used in identification of fungi


  • 8. 
    Which of the following pairs are mismatched? 1.Arthrospore--formed by fragmentation 2.Sporangiospore--formed within hyphae 3.Conidiospore--formed in a chain 4.Blastospore--formed from a bud 5.Chlamydospore--formed in a sac
    • A. 

      1 and 2

    • B. 

      3 and 4

    • C. 

      2 and 5

    • D. 

      4 and 5

    • E. 

      2 and 3


  • 9. 
    All of the following are true about protozoa except
    • A. 

      They have eucaryotic cells

    • B. 

      All make cysts

    • C. 

      They may reproduce sexually

    • D. 

      They may have flagella or cilia

    • E. 

      None of the above


  • 10. 
    If a larva of Echinococcus ganulosus is found in humans, humans are the
    • A. 

      Definitive host

    • B. 

      Infected host

    • C. 

      Intermediate host

    • D. 

      Reservoir

    • E. 

      None of the above


  • 11. 
    Which of the following is not associated with foodborne illness?
    • A. 

      Shigella

    • B. 

      Campylobacter

    • C. 

      Erwinia

    • D. 

      Staphylococcus aureus

    • E. 

      Salmonella


  • 12. 
    In a healthy human, resident microorganisms would be found in all of the following areas except:
    • A. 

      Lower urethra

    • B. 

      Conjunctiva

    • C. 

      Bloodstream

    • D. 

      Tooth and gum surfaces

    • E. 

      Nasal passages


  • 13. 
    Which of the following molecules or structures is not associated with innate immunity?
    • A. 

      Mucous membranes

    • B. 

      Phagocytes

    • C. 

      Antibodies

    • D. 

      Lysozyme

    • E. 

      Skin


  • 14. 
    Both staphylococci and streptococci:
    • A. 

      Are gram-positive cocci

    • B. 

      Are arranged in chains

    • C. 

      Are gram-negative cocci

    • D. 

      Form endospores

    • E. 

      Are strict anaerobes


  • 15. 
    Which would be the most unlikely location to find adhesin molecules on a newly discovered bacterium?
    • A. 

      Fimbriae

    • B. 

      Capsule

    • C. 

      Glycocalyx

    • D. 

      Ribosomes

    • E. 

      Cell wall


  • 16. 
    Viruses that infect bacteria are called:
    • A. 

      Virions

    • B. 

      Hepadnaviridae

    • C. 

      Bacteriophages

    • D. 

      Bactericides

    • E. 

      Polyhedral virus


  • 17. 
    Cell-mediated immunity in part protects against:
    • A. 

      Normal cells of the host, producing the cell-mediated immunity

    • B. 

      Viruses free in body fluids

    • C. 

      Bacteria free in body fluids

    • D. 

      Intracellular bacteria and viruses

    • E. 

      Toxins


  • 18. 
    Hyphae that lack cross-walls, and thus are long tubes with many nuclei, are called:
    • A. 

      Coenocytic

    • B. 

      Septate

    • C. 

      Rhizoid

    • D. 

      Plasmodial

    • E. 

      Mycelial


  • 19. 
    In the human intestinal tract, E.coli produces vitamins beneficial to the host and can inhibit pathogen growth. In turn, the bacterium is supplied with nutrients and an environment for growth. This relationship between E.coli and its host is an example of:
    • A. 

      Antagonism

    • B. 

      Parasitism

    • C. 

      Opportunism

    • D. 

      Commensalism

    • E. 

      Mutualism


  • 20. 
    The respiratory system is protected against harmful microbes by all of the following except:
    • A. 

      The ciliary escalator

    • B. 

      Mucous-coated hairs

    • C. 

      The lacrimal apparatus

    • D. 

      The epiglottis

    • E. 

      Ciliated cells


  • 21. 
    Subunit vaccines tend to be safer than whole cell vaccines because:
    • A. 

      They contain avirulent strains

    • B. 

      They contain intact but dead microbes

    • C. 

      They cannot reproduce in the host

    • D. 

      They produce a stronger immune response

    • E. 

      They are antigenic


  • 22. 
    Which of the following is not an A-B exotoxin?
    • A. 

      Tetanus toxin

    • B. 

      Cholera toxin

    • C. 

      Diphtheria toxin

    • D. 

      Staphylococcus aureus enterotoxin

    • E. 

      Streptolysin O


  • 23. 
    Borrelia, the causative agent of Lyme disease, is a spirochete similar to the causative agent of syphilis, Treponema. Both bacteria:
    • A. 

      Have flagella

    • B. 

      Are gram-positive

    • C. 

      Have endospores

    • D. 

      Have axial filaments


  • 24. 
    Which is not a cell type involved in cell-mediated immunity?
    • A. 

      Cytotoxic T cells

    • B. 

      Plasma cells

    • C. 

      TH1 cells

    • D. 

      Helper T cells

    • E. 

      Regulatory T cells


  • 25. 
    All of the following are true of the fungi except:
    • A. 

      They can grow in high concentrations of sugars and salts

    • B. 

      Diseases caused by fungi are called mycoses

    • C. 

      They are strict aerobes

    • D. 

      They are capable of metabolising complex carbohydrates found in newspaper and wood

    • E. 

      Identification of fungi usually involves examination of spore types


  • 26. 
    The stage of phagocytosis in which the phagocyte's plasma membrane attaches to the surface of the microbe is called:
    • A. 

      Adherence

    • B. 

      Chemotaxis

    • C. 

      Ingestion

    • D. 

      Cytolysis

    • E. 

      Fusion


  • 27. 
    Infectious diseases which are easily passed from host to host within a population are best described as:
    • A. 

      Noncommunicable

    • B. 

      Communicable

    • C. 

      Contagious

    • D. 

      Acute

    • E. 

      Chronic


  • 28. 
    Which of the following is true about conjugated vaccines:
    • A. 

      The antigens are made using recombinant DNA technology

    • B. 

      They are useful because young children respond poorly to polysaccharides

    • C. 

      They contain only protein subunits

    • D. 

      They contain attenuated pathogens

    • E. 

      They contain only T-dependent antigens


  • 29. 
    All of the following are true of inflammation except:
    • A. 

      Many neutrophils can be found at the site of chronic inflammation

    • B. 

      It can be triggered by microbial infection, burns, exposure to chemicals, or trauma

    • C. 

      Vasodilation causes the redness of affected tissues

    • D. 

      Granulocytes that have died are commonly engulfed by macrophages

    • E. 

      Histamine released by damaged host cells can result in vasodilation


  • 30. 
    For IgG, the antigen binding site is found on the
    • A. 

      Variable region of a heavy and the variable region of a light chain

    • B. 

      Variable regions of two heavy chains

    • C. 

      Fc region

    • D. 

      Variable regions of two light chains

    • E. 

      Constant region of the heavy chain and the constant region of the light chain


  • 31. 
    Which is true of endotoxins?
    • A. 

      They are proteins

    • B. 

      They are released upon cell lysis

    • C. 

      They are produced by gram-positive bacteria

    • D. 

      They are disease-specific

    • E. 

      They increase blood pressure


  • 32. 
    Members of the adenoviridae cause:
    • A. 

      Hepatitis

    • B. 

      Old sores

    • C. 

      The common cold

    • D. 

      Warts

    • E. 

      AIDS


  • 33. 
    Both agglutination and precipitation tests:
    • A. 

      Involve soluble antigen

    • B. 

      Involve IgG but not IgM

    • C. 

      Cannot detect antibody

    • D. 

      Result in changes that require microscopy to detect

    • E. 

      Result in antibody cross-linking antigen


  • 34. 
    Which of the following has a J chain as part of its structure?
    • A. 

      IgG

    • B. 

      IgM

    • C. 

      IgD

    • D. 

      IgE

    • E. 

      All Ig classes


  • 35. 
    Complement can be activated by all of the following except:
    • A. 

      Antigen-antibody binding.

    • B. 

      Opsonization

    • C. 

      Presence of host tissue

    • D. 

      Mannose-binding lectins

    • E. 

      Contact with a pathogen


  • 36. 
    An example of an asexual fungal spore is a/an:
    • A. 

      Ascus

    • B. 

      Ascospore

    • C. 

      Sporangiospore

    • D. 

      Zygospore

    • E. 

      Basidiospore


  • 37. 
    Enterics are:
    • A. 

      Anaerobic, gram-negative bacteria that cause disease

    • B. 

      Gram-positive bacteria found in humans

    • C. 

      Facultatively anaerobic, gram-negative rods found in the intestines of animals

    • D. 

      Anaerobic bacteria


  • 38. 
    Which of the following diseases does not have a human reservoir?
    • A. 

      Diphtheria

    • B. 

      Tetanus

    • C. 

      AIDS

    • D. 

      Strep infections

    • E. 

      Gonorrhea


  • 39. 
    Which is in the correct order of differentiation?
    • A. 

      Stem cells to B cells to plasma cells

    • B. 

      Stem cells to plasma cells to B cells

    • C. 

      Plasma cells to B cells to stem cells

    • D. 

      B cells to stem cells to plasma cells

    • E. 

      B cells to plasma cells to stem cells


  • 40. 
    Which of the following is not a cytopathic effect of viruses?
    • A. 

      Loss of contact inhibition

    • B. 

      Inclusion bodies

    • C. 

      Cell fusion

    • D. 

      Cell death

    • E. 

      Leukocidins lysing WBCs


  • 41. 
    Interferons:
    • A. 

      Are virus-specific but not host-specific

    • B. 

      Can protect any host against any virus

    • C. 

      Are host-specific but not virus-specific

    • D. 

      Are both host-specific and virus-specific

    • E. 

      Are only useful for treating viral infections


  • 42. 
    Cell lines that are derived from transformed (cancerous) cells are called:
    • A. 

      Monolayers

    • B. 

      Primary cell lines

    • C. 

      Plaques

    • D. 

      Continuous cell lines

    • E. 

      Embryonated


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