MCQOPTIONS
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MCQOPTIONS
This section includes 475 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following structures, found external to the bacterial cell wall, are involved in bacterial attachment to cell surfaces? |
| A. | Capsule |
| B. | Flagella |
| C. | Pili |
| D. | Mesosomes |
| Answer» D. Mesosomes | |
| 2. |
Which of the following viruses appears to be involved in the pathogenesis of Kaposi’s sarcoma_____________? |
| A. | Human Herpes Virus 3 |
| B. | Human Herpes Virus 1 |
| C. | Human Herpes Virus 8 |
| D. | Human Herpes Virus 4 |
| Answer» E. | |
| 3. |
Which of the following viruses are most likely to cross placenta and cause foetal defect ? |
| A. | Herpes Simplex |
| B. | Mumps |
| C. | Rubella |
| D. | Papilloma |
| Answer» D. Papilloma | |
| 4. |
Which of the following viruses does not infect salivary glands ? |
| A. | Echo virus |
| B. | Hepatitis C |
| C. | HIV |
| D. | Orthomyxovirus |
| Answer» E. | |
| 5. |
Which of the following viruses produces both intranuclear and intracytoplasmic inclusion bodies_____________? |
| A. | Chicken pox |
| B. | Rabies |
| C. | Small pox |
| D. | Measles |
| Answer» E. | |
| 6. |
Which of the following would you consider to be general properties of viruses______________? |
| A. | New virus particle arises directly (by division) from preexisting viruses |
| B. | Fall in to the general size range of 200-3000 angstrom unit |
| C. | Contain equal proportions of protein, lipo polysaccharide and nucleic acids |
| D. | Contain DNA but no RNA |
| Answer» C. Contain equal proportions of protein, lipo polysaccharide and nucleic acids | |
| 7. |
Which one of the following enteric organisms is anaerogenic and non motile ? |
| A. | Shigella sonnei |
| B. | Salmonella typhi |
| C. | Proteus mirabilis |
| D. | Klebsiella pneumonia |
| Answer» B. Salmonella typhi | |
| 8. |
Which organism causes prosthetic valve endocarditis within 60 days of surgery________________? |
| A. | Streptococcus Viridans |
| B. | Staphylococcus epidermis |
| C. | Staphylococcus aureus |
| D. | Fungus |
| Answer» C. Staphylococcus aureus | |
| 9. |
Which regards to temperature requirement, most pathogenic bacteria are_____________? |
| A. | Psychrophiles |
| B. | Mesophiles |
| C. | Cryophiles |
| D. | Thermophiles |
| Answer» C. Cryophiles | |
| 10. |
Which stage of plasmodium vivax is infective to mosquito______________? |
| A. | Sporozoite |
| B. | Gametocyte |
| C. | Merozoite |
| D. | Zygote |
| Answer» C. Merozoite | |
| 11. |
Which worm is longest________________? |
| A. | T. Solium |
| B. | T. Saginata |
| C. | Hook worm |
| D. | A. Lumbricoides |
| Answer» C. Hook worm | |
| 12. |
Who first introduced solid media_______________? |
| A. | Louis pasteur |
| B. | Robert koch |
| C. | Hensen |
| D. | Ogston |
| Answer» C. Hensen | |
| 13. |
Widal test is specific for____________? |
| A. | Plague |
| B. | Leprosy |
| C. | Pemhigoid |
| D. | Typhoid |
| Answer» E. | |
| 14. |
Zero growth rate is observed during one of the phase of the bacterial growth curve______________? |
| A. | Lag |
| B. | Exponential growth |
| C. | Stationary phase |
| D. | Decline |
| Answer» D. Decline | |
| 15. |
Which of the following statement about P24 antigen of HIV is Not True ? |
| A. | It can be detected during the window period |
| B. | Free P24 antigen disappears after the appearance of IgM response to it: |
| C. | Virus load parallel P24 titre |
| D. | It remains during asymptomatic phase |
| Answer» E. | |
| 16. |
Which of the following represents the serologic evidence of recent Hepatitis B virus infection during window period ? |
| A. | HBs Ag |
| B. | IgM anti – HBc |
| C. | Anti HBs |
| D. | None of the above |
| Answer» C. Anti HBs | |
| 17. |
Which of the following provides best gurantee for sterlization in the heat sterilizer ? |
| A. | Using chemical indicator strip or pouch |
| B. | Recording a temperature/ pressure readings from sterilizer guage |
| C. | Using a bacterial spore test |
| D. | Determining the ability of a sterilizer to kill the hepatitis B virus |
| Answer» D. Determining the ability of a sterilizer to kill the hepatitis B virus | |
| 18. |
Which of the following parasite causes autoinfection_________________? |
| A. | Giardia lambella |
| B. | Isopora belli |
| C. | Balantidium coli |
| D. | Taenia solium |
| Answer» E. | |
| 19. |
Which of the following organisms does NOT react with gram’s stain ? |
| A. | Actinomyces israelii |
| B. | Candida albicans |
| C. | Mycobacterium tuberculosis |
| D. | Streptococcus mutan |
| Answer» D. Streptococcus mutan | |
| 20. |
Which of the following organisms are arranged in cubical packets of eight cocci________________? |
| A. | Staphylococcus |
| B. | Micrococcus |
| C. | Sarcina |
| D. | Aerococcus |
| Answer» D. Aerococcus | |
| 21. |
Which of the following microbial cell is most resistant to antiseptics & disinfectants ? |
| A. | Mycobacteria |
| B. | Spore |
| C. | Prions |
| D. | Coccidia |
| Answer» D. Coccidia | |
| 22. |
Which of the following methods is adopted for screening HIV infection ? |
| A. | Virus isolation |
| B. | Western blot followed by ELISA |
| C. | ELISA followed by western blot technique |
| D. | Polymers chain reaction |
| Answer» D. Polymers chain reaction | |
| 23. |
Which of the following lesions is NOT an infection from human papilloma virus ? |
| A. | Verruca vulgaris |
| B. | Focal epithelial hyperplasia |
| C. | Condyloma acuminatum |
| D. | Keratoacanthoma |
| Answer» E. | |
| 24. |
Which of the following is true about tetanus acquired through traumatic wound ? |
| A. | Clostridium tetani travels via the nerves to the anterior horn dells in spinal cord |
| B. | The tetanospasmin component of the exotoxin act on the post-synaptic neurones and prevents impulse transmission |
| C. | The patient should be given tetanus toxoid intravenously |
| D. | Causes positive Nagler reaction |
| Answer» B. The tetanospasmin component of the exotoxin act on the post-synaptic neurones and prevents impulse transmission | |
| 25. |
Which of the following is true about pasteurization ? |
| A. | It kills bacteria and spores |
| B. | It kills all bacteria except thermoduric bacteria |
| C. | It kills 95% of microorganisms |
| D. | Tubercle bacilli are destroyed |
| Answer» C. It kills 95% of microorganisms | |
| 26. |
Which of the following is true about amoebic liver disease ? |
| A. | Left lobe of liver is commonly involved |
| B. | Portal system is the main filtration system |
| C. | Trophozoites can be visualized in the pus |
| D. | Non-suppurative form is the serious form of extra intestinal amoebiasis |
| Answer» D. Non-suppurative form is the serious form of extra intestinal amoebiasis | |
| 27. |
Which of the following is obligate aerobe ? |
| A. | Pseudomonas aerogenosa |
| B. | coli |
| C. | Proteus |
| D. | diphtheria |
| Answer» B. coli | |
| 28. |
Which of the following is not used as disinfectant________________? |
| A. | 1-2% cetrimide |
| B. | 100% alcohol |
| C. | 2% Lysol |
| D. | 5% chloroxylene |
| Answer» C. 2% Lysol | |
| 29. |
Which of the following is not true of boiling water_____________? |
| A. | It can kill hepatitis B virus |
| B. | Used for sterilizing surgical instruments |
| C. | Can kill mycobacterium tuberculosis |
| D. | Can kill vegetative bacterial cells |
| Answer» C. Can kill mycobacterium tuberculosis | |
| 30. |
Which of the following is not transmitted by lice ? |
| A. | Trench fever |
| B. | Relapsing fever |
| C. | Q fever |
| D. | Epidemic typhus |
| Answer» D. Epidemic typhus | |
| 31. |
Which of the following is not a pox virus ? |
| A. | Cowpox |
| B. | Molluscum contagiosum |
| C. | Small pox |
| D. | chicken pox |
| Answer» E. | |
| 32. |
Which of the following is not a koch’s postulate ? |
| A. | The bacteria should be able to be isolated from a diseased tissue |
| B. | When inoculated in experimental animals bacteria may or may not cause disease |
| C. | Pure cultures can be obtained |
| D. | Bacteria should be able to be isolated from the diseased tissue in the experimental animals |
| Answer» C. Pure cultures can be obtained | |
| 33. |
Which of the following is NOT a live attenuated vaccine ? |
| A. | Tuberculosis (BCG) |
| B. | Typhoid |
| C. | Varicella Zoster virus |
| D. | Cholera |
| Answer» E. | |
| 34. |
Which of the following is not a feature of anaphylaxis ? |
| A. | Delayed reaction |
| B. | Immediate reaction |
| C. | passive transfer by serum |
| D. | None of the above |
| Answer» B. Immediate reaction | |
| 35. |
Which of the following is most potent antigen for stimulating both humoral and cell mediated immunity ? |
| A. | Adjuvant |
| B. | Proteins |
| C. | Polysaccharides |
| D. | Lipids |
| Answer» C. Polysaccharides | |
| 36. |
which of the following is anaerobic_______________? |
| A. | E.coli |
| B. | Bacteroides |
| C. | Pseudomonas |
| D. | Klebsiella |
| Answer» C. Pseudomonas | |
| 37. |
Which of the following is an enrichment medium________________? |
| A. | Blood agar |
| B. | Selenite F Broth |
| C. | Mac Conkey agar |
| D. | Nutrient Broth |
| Answer» C. Mac Conkey agar | |
| 38. |
Which of the following is an acid-fast bacillus_____________? |
| A. | Mycobacterium bacilli |
| B. | Treponema pallidum |
| C. | Neisseria gonorrhea |
| D. | All of the above |
| Answer» B. Treponema pallidum | |
| 39. |
Which of the following is a RNA virus ? |
| A. | Measles virus |
| B. | Herpes Virus |
| C. | Papavo virus |
| D. | Adeno virus |
| Answer» B. Herpes Virus | |
| 40. |
Which of the following is a live vaccine_____________? |
| A. | 17 D |
| B. | Salk |
| C. | Hepatitis |
| D. | HDCV |
| Answer» E. | |
| 41. |
Which of the following immunoglobulins has the highest mean serum concentration in humans_________________? |
| A. | IgA |
| B. | IgD |
| C. | IgG |
| D. | IgM |
| Answer» D. IgM | |
| 42. |
Which of the following have the capability to produce extra cellular polysaccharides______________? |
| A. | Strep. Mutans |
| B. | Strep. pyogenes |
| C. | Peptostreptococcus |
| D. | Enterococcus |
| Answer» B. Strep. pyogenes | |
| 43. |
Which of the following fulfil all the criterias of kich’s postulates ? |
| A. | Treponema pallidum |
| B. | Mycobacterium leprae |
| C. | N. gonorrhoeae |
| D. | None of the above |
| Answer» E. | |
| 44. |
Which of the following exposure carries the maximum risk of transmission of HIV____________? |
| A. | Blood transfusion |
| B. | Sexual intercourse |
| C. | Needle prick |
| D. | Transplacental |
| Answer» B. Sexual intercourse | |
| 45. |
Which of the following enzyme is required to induce the formation of a plasma clot pathogenic staphylococci_____________? |
| A. | Lysozyme |
| B. | Fibrinolysin |
| C. | Coagulase |
| D. | S protein |
| Answer» D. S protein | |
| 46. |
Which of the following does not go into chronic hepatitis stage ? |
| A. | HBV |
| B. | HCV |
| C. | HDV |
| D. | HEV |
| Answer» E. | |
| 47. |
Which of the following correctly indicates the infectivity of hepatitis virus in human ? |
| A. | HBCAg |
| B. | HBeAg |
| C. | Anti-HBC |
| D. | Anti-HBS |
| Answer» C. Anti-HBC | |
| 48. |
Which of the following characteristics of bacteria is not true? |
| A. | Unicellular |
| B. | Free living |
| C. | Having either DNA or RNA |
| D. | Cell wall containing muramic acid |
| Answer» D. Cell wall containing muramic acid | |
| 49. |
Which of the following belongs to cell fraction derived vaccine______________? |
| A. | Measles |
| B. | Mumps |
| C. | Rubella |
| D. | Hepatitis B |
| Answer» E. | |
| 50. |
Which of the following are non-spore forming anaerobic bacteria that asume major significance in disease processes________________? |
| A. | Bacteroides fragilis |
| B. | Fusobacterium nucleatum |
| C. | Peptostreptococcus anaerobius |
| D. | Actinomyces Israeli |
| E. | All of the above |
| Answer» F. | |