Microbes- Bacteria And Virus Test

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Microbes- Bacteria And Virus Test

Microbes or microorganisms are microscopic organisms which can be unicellular, multicellular, or even cell cluster. Microbes range from fungi, protozoa to bacteria, viruses, etc. This test exists to see how much you know about this topic. So, without any further ado, let's get started.


Questions and Answers
  • 1. 
    Point at the HBV particle that is located in the envelope: 
    • A. 

      C antigen

    • B. 

      X antigen

    • C. 

      S antigen

    • D. 

      E antigen

    • E. 

      Reverse transcriptase

  • 2. 
    Which of the following antimicrobial agents you can use in the treatment of VRE infections?
    • A. 

      Trimethropin

    • B. 

      Daptomycin

    • C. 

      Erythromycin

    • D. 

      Co-trimeoxazole

  • 3. 
    Sensorineural deafness and intellectual impairment have been observed in an 8-year-old girl, this can be caused by which congenital infection:
    • A. 

      Epstein-Barr virus

    • B. 

      Influenza virus

    • C. 

      Human immunodeficiency virus

    • D. 

      Cytomegalovirus

    • E. 

      Human herpes virus type 6

  • 4. 
    A 54-year-old suffers from viral chronic hepatitis. Which of the following antimicrobials should be used in this treatment?
    • A. 

      Ganciclovir

    • B. 

      Zanamivir

    • C. 

      Peglyated interferon alfa-2a

    • D. 

      Daptomycin

    • E. 

      Zidovudine

  • 5. 
    A 28-year-old about frequent painful urination, presence of mucous purulent discharge, persistent pain in pelvis, and bleeding between periods. PCR was done from the vaginal swab to confirm the presence of:
    • A. 

      Human paplliomavirus

    • B. 

      Chlamydia trachomatis

    • C. 

      HIV

    • D. 

      Treopnema pallidum 

    • E. 

      N. gonorrhea 

  • 6. 
    A 45-year-old man presented to the emergency department with flank pain with costovertebral angle tenderness on examination, fever, and bacteriuria. A urine dipstick test was positive for nitrite, leukocyte esterase, WBC, and protein. A diagnosis of acute pyelonephritis was made. Pink colonies on McConkey agar were grown from urine. Which of the following microorganisms is the cause of the patient's pyelonephritis? 
    • A. 

      Enterobacter hormaechei

    • B. 

      Enterococcus facieum 

    • C. 

      Pseudomonas aeruginosa

    • D. 

      Acinetobacter baumanii

    • E. 

      Proteus Vulgaris

  • 7. 
    Point at the virus with a genome of ssRNA of positive polarity that is replicated via a DNA intermediate:
    • A. 

      Epstein- Barr virus

    • B. 

      Reovirus

    • C. 

      HIV

    • D. 

      Cytomegalovirus

    • E. 

      Poxvirus

  • 8. 
    The dengue vaccine manufacturer announced that people who receive this vaccine and have not been previously infected with a dengue virus may be at risk of developing severe dengue if they get dengue after being vaccinated. The WHO recommends that the vaccine should only be given to persons with confirmed prior to dengue virus infection. Which of the following types of vaccines is active against dengue?
    • A. 

      Recombinant vaccine

    • B. 

      Polypeptide vaccine

    • C. 

      Polysaccharide vaccine

    • D. 

      Attenuated

    • E. 

      Inactivated vaccine

  • 9. 
    Point at the series of criteria to confirm the causative microbial agent of the disease.
    • A. 

      Koch postulates

    • B. 

      Theory of biogenesis by Louis Pasteur

    • C. 

      Robert Whittaker classidfication

    • D. 

      Carl Woese classification

    • E. 

      Daniel Gajdusek hypothesis 

  • 10. 
    Point at the description of the most important virulence factor of Clostridium botulinum
    • A. 

      Lyses erythrocytes (beta-haemolysis) and leukocytes, is not immunogenic

    • B. 

      Blocks the inhibitory neurotransmitter release at central and peripheral synapses resulting in accumulation of acetylcholine

    • C. 

      ADP- ribolysation of eEF-2 inhibits the protein synthesis 

    • D. 

      Affects peripheral cholinergic synapses by blocking the neuromuscular junction and inhibiting acetylcholine release 

    • E. 

      Acts as the Ca2+ and calmodulin dependent adenylate cyclase that greatly increases the cAMP level

  • 11. 
    The regressive hypothesis says that some existing pathogens may have evolved from more complex, possibly free-living organisms that lost genetic information over time, as they adopted a parasite approach to replication, this may explain the origin of which of the following pathogens?
    • A. 

      Brucella abortus

    • B. 

      Candida auris

    • C. 

      Mycobacterium avium-intracellulare

    • D. 

      Human papilloma virus

    • E. 

      Microorganism responsible for diptheria

  • 12. 
    The neonate born to mother with active varicella-zoster infection should be immediately given:
    • A. 

      Vaccination with Oka strain

    • B. 

      Passive immunization

    • C. 

      Zidovudine

    • D. 

      Vancomycin

    • E. 

      Teicoplanin

  • 13. 
    When you take the blood samples from the patient suspected to have the bloodstream infection due to high fever and elevated procalcitonin level, you may expect the growth of:
    • A. 

      S.epidermidis in the first sample, S.aures in the second sample, E.faecalis in the third sample, and Acinetobacter baumanii in the fourth sample

    • B. 

      Mycobacterium leprae and Mycobacterium tuberculosis in one sample

    • C. 

      S.epidermidis on one blood sample

    • D. 

      S.epidermidis, S.aures, E.faecalis, and Acinetobacter baumanii in one sample

    • E. 

      E.coli in at least 2 blood samples 

  • 14. 
    Point at the human infection resulting from the lysogenic conversion:
    • A. 

      Hepatits D

    • B. 

      Gonorrhea

    • C. 

      Bacterial vaginosis

    • D. 

      Hepatits C

    • E. 

      Cholera

  • 15. 
    In a lac-operon of the cultivated E.coli strain, under which of the following conditions of the culture medium lacZ, lacY, and lacA genes will be transcribed at high levels?
    • A. 

      The glucose concentration in the culture medium does not influence on any these genes

    • B. 

      High glucose, low lactose

    • C. 

      Low glucose, low lactose 

    • D. 

      Low glucose, high lactose

    • E. 

      High glucose, high lactose

  • 16. 
    Point at the main target cells for influenza virus?
    • A. 

      Fibroblasts 

    • B. 

      CD4+ cells 

    • C. 

      Monocytes

    • D. 

      Enterocytes

    • E. 

      Columnar epithelial cells

  • 17. 
    Point at the main targets for reverse transcriptase containing RNA viruses: 
    • A. 

      P24

    • B. 

      Gp120

    • C. 

      Columnar epithelial cells 

    • D. 

      Hepatocytes

    • E. 

      CD4+ T cells

  • 18. 
    The best method to eradicate pathogens from the surgical equipment is:
    • A. 

      Tyndallization

    • B. 

      Flaming 

    • C. 

      Pasteurization

    • D. 

      Boiling 

    • E. 

      Autoclaving 

  • 19. 
    Which of the following groups of antimicrobial agents permeabilized and depolarise the bacterial cell membrane and is active against gram-positive coccus: 
    • A. 

      Macrolides

    • B. 

      Lincosamides 

    • C. 

      Lipoglycopeptides

    • D. 

      Ketolides

    • E. 

      Lipopeptides 

  • 20. 
    A heterophile antibody test has been used to confirm a viral infection in adult patients. Most probably he was infected with:
    • A. 

      Varicella-zoster virus

    • B. 

      HIV

    • C. 

      Measles virus

    • D. 

      Rubella virus

    • E. 

      Epstein-barr virus 

  • 21. 
    A 1 week-old baby was hospitalized due to suspicion of meningitis. Microbiological analysis of the CSF revealed gram-positive rods. Most likely the pathogen is:
    • A. 

      Bacillus cereus

    • B. 

      E.coli

    • C. 

      Listeria monocytogenes

    • D. 

      Clostridium spp.

    • E. 

      Lactobacillus rhamnosus

  • 22. 
    Acute phase viremia in HIV-positive patients appears as:
    • A. 

      Pneumocystis jiroveci pneumonia

    • B. 

      Infectious mononucleosis 

    • C. 

      Kaposi's sarcoma

    • D. 

      Shingles

    • E. 

      Mononucleosis-like syndrome 

  • 23. 
    Staphylococcal scalded skin syndrome is an acute epidermolysis caused by the staphylococcal exotoxin. Infants and children are most susceptible. exfoliative toxin A released from S.aures is encoded with
    • A. 

      Staphylococcal pathogenicity island (SaPI)

    • B. 

      MecA gene

    • C. 

      Staphylococcal cassette chromosome SCC

    • D. 

      Prophage

    • E. 

      PlasmidĀ 

  • 24. 
    Transesophageal echocardiography was performed on a 56-year-old patient with dental problems and confirmed the suspected diagnosis of mitral valve infective endocarditis. The vegetation of 8mm was attached to the anteromedial segment of the anterior mitral valve leaf with irregular edges. Repetitive hemocultures were positive for a facultatively anaerobic, catalase-negative, resistant to optochin, gram-positive coccus. Which of the following microorganisms caused this infective endocarditis?
    • A. 

      S.aures

    • B. 

      Enterococcus faecium

    • C. 

      S.pneumoniae

    • D. 

      S. sanguinis

    • E. 

      S. epidermidis 

  • 25. 
    Point at the most probable reservoir of influenza virus type A:
    • A. 

      Humans

    • B. 

      Birds

    • C. 

      Horses

    • D. 

      Rodents

    • E. 

      Marine mammals

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