Can You Pass This Toughest Microbiology Test? Quiz

50 Questions

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Can You Pass This Toughest Microbiology Test? Quiz

The study of microbiology has helped to find the cure on many diseases that affect living things and therefore helping in coming up with a cure or preventive measures. How well informed are you when it comes to microbiology? Take up the quiz below and see if you indeed do have what it takes to pass the toughest microbiology test. All the best!


Questions and Answers
  • 1. 
    The cell which gives rise to macrophages is the __________.
    • A. 

      Neutrophil

    • B. 

      Monocyte

    • C. 

      Basophil

    • D. 

      Lymphocyte

  • 2. 
    The lymphoid cells responsible for cellular immunity are:
    • A. 

      Macrophages

    • B. 

      B cells

    • C. 

      T cells

    • D. 

      Microphages

  • 3. 
    The term _____ refers to a microorganism's potential to cause disease or infection.
    • A. 

      Immunity

    • B. 

      Antigenicity

    • C. 

      Pathogenicity

    • D. 

      Virulence

  • 4. 
    The enzyme _______ found in mucous and tears of the body destroys certain bacteria.
    • A. 

      Interferon

    • B. 

      Lysozyme

    • C. 

      Antibody

    • D. 

      Thymosin

  • 5. 
    The greatest concentration of antibodies found in serum is:
    • A. 

      IgG

    • B. 

      IgM

    • C. 

      IgE

    • D. 

      IgA

  • 6. 
    The binding of an antibody to an antigen takes place on the _____ region of the molecule.
    • A. 

      Constant

    • B. 

      Variable

  • 7. 
    Which of the following antibiotics is active against fungi?
    • A. 

      Tetracycline

    • B. 

      Chloramphenicol

    • C. 

      Kanamycin

    • D. 

      Amphotericin B

  • 8. 
    Which of the following granulocytes is involved in inflammation?
    • A. 

      Monocytes

    • B. 

      Eosinophils

    • C. 

      Neutrophils

    • D. 

      Basophils

  • 9. 
    Antigens that stimulate the immune response are usually _________ molecules.
    • A. 

      Large

    • B. 

      Small

  • 10. 
    Immunoglobin A (IgA) antibodies:
    • A. 

      Provide protection on mucosal surfaces

    • B. 

      Enhance phagocytosis and neutralize toxins

    • C. 

      Agglutinate and lyse microbes

    • D. 

      Cause allergies

  • 11. 
    Substances that increase the susceptibility of microbes to destruction by phagocytes are:
    • A. 

      Complement

    • B. 

      Antigens

    • C. 

      Albumins

    • D. 

      Toxins

  • 12. 
    The formation of toxoids is a property of:
    • A. 

      Endotoxins

    • B. 

      Exotoxins

    • C. 

      Lymphokines

    • D. 

      Interleukins

  • 13. 
    The chemical agent that inhibits DNA gyrase is:
    • A. 

      Erythromycin

    • B. 

      Quinolone

    • C. 

      Penicillin

    • D. 

      Chloramphenicol

  • 14. 
    The enzyme produced by certain pathogenic staphylococci that disolves fibrin blood clots and helps invade tissues is:
    • A. 

      Coagulese

    • B. 

      Streptokinase

    • C. 

      Staphylokinase

    • D. 

      Peptokinase

  • 15. 
    Drugs that inhibit the synthesis of folic acid molecules are characteristic of ______ chemotherapeutic agents.
    • A. 

      Cyclic decapeptides

    • B. 

      Beta-lactams

    • C. 

      Macrolides

    • D. 

      Sulfonamides

  • 16. 
    The body's ability to resist infections by viruses is due to the secretion of ____ by many different cells.
    • A. 

      Interleukin I

    • B. 

      Macrophage activation factor

    • C. 

      Blastogenic factor

    • D. 

      Interferon

  • 17. 
    Microbes which contribute to the host by providing nutrition and protection against infection are known as ______ flora.
    • A. 

      Infective

    • B. 

      Transient

    • C. 

      Normal

    • D. 

      Opportunistic

  • 18. 
    The number of chemotherapeutic agents available to treat viral infections are considerably ______ than those available for treating bacterial disease.
    • A. 

      More numerous

    • B. 

      Less numerous

  • 19. 
    The accelerated and more intense response of antibodies to an antigen is due to the:
    • A. 

      Primary response

    • B. 

      Secondary response

  • 20. 
    The production of circulating antibodies to protect the body is called:
    • A. 

      Phagocytosis

    • B. 

      Cellular (T cell) immunity

    • C. 

      Humoral (B cell) immunity

    • D. 

      Natural immunity

  • 21. 
    Acyclovir can be used to treat ______ infections.
    • A. 

      Bacterial

    • B. 

      Fungal

    • C. 

      Protozoan

    • D. 

      Viral

  • 22. 
    The development of ______ to antibiotics by bacteria is associated with the R plasmid.
    • A. 

      Sensitivity

    • B. 

      Resistance

  • 23. 
    Substances produced by bacteria that destroy red blood cells are:
    • A. 

      Kinases

    • B. 

      Siderophores

    • C. 

      Hemolysins

    • D. 

      Defensins

  • 24. 
    All of the following are bacterial structures which enable them to attach to the surface of a host except:
    • A. 

      Capsules

    • B. 

      Fimbriae

    • C. 

      Spikes

    • D. 

      Inclusions

  • 25. 
    All of the following are components of non-specific defenses except:
    • A. 

      Intact skin

    • B. 

      Mucous membrane

    • C. 

      Digestive juices

    • D. 

      Antibody production

  • 26. 
    The agar diffusion test used for antibiotic sensitivity testing is a ______ assay.
    • A. 

      In vivo

    • B. 

      In vitro

  • 27. 
    You visit your friend who is recuperating from the flu.  Three days later you come down with the flu.  Your friend is a ________ carrier.
    • A. 

      Incubatory

    • B. 

      Demon

    • C. 

      Convalescent

    • D. 

      Arthropod

  • 28. 
    All of the following antibiotics are produced by Streptomyces sps except?
    • A. 

      Ketoconazole

    • B. 

      Chloramphenicol

    • C. 

      Erythromycin

    • D. 

      Tetracycline

  • 29. 
    The immunization of an individual with an antigen that causes the body to produce antibodies is ____________.
    • A. 

      Passive

    • B. 

      Active

  • 30. 
    Infectious diseases acquired as a result of a hospital stay are called _______ infections.
    • A. 

      Epidemic

    • B. 

      Zoonotic

    • C. 

      Sporadic

    • D. 

      Nosocomial

  • 31. 
    The presence of microorganisms in the blood stream that cause infections is called:
    • A. 

      Septicemia

    • B. 

      Pyemia

    • C. 

      Toxemia

    • D. 

      Viremia

  • 32. 
    _________ are produced by cytotoxic T cells.
    • A. 

      Perforins

    • B. 

      Fever

    • C. 

      Inflammation

    • D. 

      Complement

  • 33. 
    A microorganism that is normally not pathogenic but can cause diseases if tissue injury occurs or if body defenses are compromised is called a __________ pathogen.
    • A. 

      Primary

    • B. 

      Opportunistic

  • 34. 
    The antibiotic used to treat infections caused by Mycoplasmas, Spirochetes and Chalamydias is:
    • A. 

      Penicillin

    • B. 

      Bacitracin

    • C. 

      Tetracycline

    • D. 

      Cefoperazone

  • 35. 
    An inanimate object that harbors and transmits pathogens is a _________.
    • A. 

      In-law

    • B. 

      Demon

    • C. 

      Fomite

    • D. 

      Arthropod

  • 36. 
    The synthetic agent most commonly used for prophylaxis and treatment of tuberculosis is:
    • A. 

      Penicillin

    • B. 

      Rifampin

    • C. 

      Isoniazid

    • D. 

      Cephalosporin

  • 37. 
    An elevation in body temperature can be the result of _____ by certain gram negative bacteria.
    • A. 

      Exotoxins

    • B. 

      Endotoxins

  • 38. 
    In a healthy individual, microorganisms are found in the _______ respiratory tract.
    • A. 

      Upper

    • B. 

      Lower

  • 39. 
    The process of stimulating an immune response is called:
    • A. 

      Atrophy

    • B. 

      Immunogenicity

  • 40. 
    Infections which come on rapidly, with severe but short lived effects, are _____ infections.
    • A. 

      Acute

    • B. 

      Chronic

  • 41. 
    All of the following enzymes contribute to the penetration and spread of microorganisms except:
    • A. 

      Hyaluronidase

    • B. 

      Mucinase

    • C. 

      Coagulase

    • D. 

      Lysosome

  • 42. 
    The correct sequence for inflammation is:
    • A. 

      Warmth --> redness --> swelling --> loss of function --> pain

    • B. 

      Swelling --> redness --> warmth --> pain --> loss of function

    • C. 

      Redness --> warmth --> swelling --> pain --> loss of function

    • D. 

      Loss of function --> warmth --> pain --> swelling

  • 43. 
    Cockroaches transmit infectious agents as _______ vectors.
    • A. 

      Biological

    • B. 

      Mechanical

  • 44. 
    The first class of antibody produced in response to an antigen is the ________.
    • A. 

      IgG

    • B. 

      IgM

    • C. 

      IgA

    • D. 

      IgE

  • 45. 
    The lowest concentration of an antibiotic that prevents the growth of a microorganism is:
    • A. 

      Chemotherapeutic index

    • B. 

      Minimal inhibitory concentration

    • C. 

      Phenol coefficient

    • D. 

      Biology assay unit

  • 46. 
    Under normal, healthy conditions microbes are _____ in fluids within organs and tissues.
    • A. 

      Present

    • B. 

      Absent

  • 47. 
    The extracellular enzyme _____ produced by certain bacteria is toxic to white blood cells.
    • A. 

      Hemolysin

    • B. 

      Collagenase

    • C. 

      Lecithinase

    • D. 

      Leucocidin

  • 48. 
    The antibiotic usually used to treat infections caused by gram positive cocci is:
    • A. 

      Penicillin

    • B. 

      Chloroquine

    • C. 

      Ketoconazole

    • D. 

      Amantadine

  • 49. 
    Which of the following are associated with a Type 1 reaction:
    • A. 

      Eczema

    • B. 

      Grave's disease

    • C. 

      Contact dermatitis

    • D. 

      Arthritis

  • 50. 
    Which of the following blood types lacks antigens?
    • A. 

      A

    • B. 

      B

    • C. 

      O

    • D. 

      A/B