MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will happen if a bacteria acquires genes coding for restriction endonuclease- |
| A. | It will have the capacity to divide and multiple many times |
| B. | Enhances proof reading activity of that bacteria |
| C. | Bacteria will die as lacks methylase |
| D. | It will damage the host cell |
| Answer» D. It will damage the host cell | |
| 2. |
Which of the following factor is mainly responsible for virulence in Streptococcus - |
| A. | Cabohydrate |
| B. | Streptokinase |
| C. | Streptodornase |
| D. | M protein |
| Answer» E. | |
| 3. |
Acellular pertusis vaccine contains- |
| A. | Pertactin , cytotoxin, endotoxin,pertactin |
| B. | flagillaryhemagglutinin, pertusis toxin, fimbriae |
| C. | Pertactin, flagillaryhemagglutinin, cytotoxin, endotoxin |
| D. | Pertactin, flagillaryhemagglutinin, fimbriae, endotoxin |
| Answer» C. Pertactin, flagillaryhemagglutinin, cytotoxin, endotoxin | |
| 4. |
Which of the following microorganism use H2S as the electron donor to reduce carbon dioxide? |
| A. | Chlorobium |
| B. | Chromaticum |
| C. | Rhodomicrobium |
| D. | Both ( and ( |
| Answer» E. | |
| 5. |
Most common organism implicated in the etiology of urinary tract infection in the community is - |
| A. | E. coli |
| B. | Proteus |
| C. | Pseudomonas |
| D. | Streptococci |
| Answer» B. Proteus | |
| 6. |
Which one of the following chemical nature makes a better antigen ? |
| A. | Lipids |
| B. | Nucleic acids |
| C. | Polysachharides |
| D. | Proteins |
| Answer» E. | |
| 7. |
Which of the following is not a neuroparasite? |
| A. | Naegleria. |
| B. | Trichinella spiralis. |
| C. | Taenia solium. |
| D. | Acant amoeba. |
| Answer» C. Taenia solium. | |
| 8. |
All are dimorphic fungi except |
| A. | Pencillium marneffi |
| B. | Phialoppra |
| C. | Blastomyces dermatitidis |
| D. | Histoplasma |
| Answer» C. Blastomyces dermatitidis | |
| 9. |
All of the following organisms are known to survive intracellularly except: |
| A. | Salmonella typhi. |
| B. | Neisseria meningitides. |
| C. | Legionella pneumophila. |
| D. | Streptococcus pyogenes. |
| Answer» E. | |
| 10. |
Asymptomatic carriage of Listeria in humans is - |
| A. | Upto 5% |
| B. | 15-20% |
| C. | 30-40% |
| D. | Not present |
| Answer» B. 15-20% | |
| 11. |
Quickest food poisoning(1-6 hours)is: |
| A. | Staphylococcus |
| B. | B.cereus |
| C. | Salmonella |
| D. | Vibrio cholerae |
| Answer» B. B.cereus | |
| 12. |
Quellung phenomenon is seen in: |
| A. | Pneumococcus |
| B. | Streptococcus |
| C. | Staphylococcus |
| D. | Hemophilus |
| Answer» B. Streptococcus | |
| 13. |
Assimilatory sulfate reduction involves the nucleotide __________ during the incorporation of H2S in the production of __________ . |
| A. | ATP; cytosine |
| B. | ATP; methionine |
| C. | GTP; cytosine |
| D. | UTP; cytosine |
| Answer» B. ATP; methionine | |
| 14. |
The most common causative organism for Traveller's diarrhoea is - |
| A. | E.coli |
| B. | Shigella |
| C. | Norwalk virus |
| D. | Rotavirus |
| Answer» B. Shigella | |
| 15. |
In the heterosexual transmission (from infective partner non-infective partner) of HIV |
| A. | There is greater risk of transmission from man to woman |
| B. | There is greater risk of transmission from woman to man |
| C. | Risk is equal in either ways |
| D. | HIV infection is not transmitted by heterosexual act |
| Answer» B. There is greater risk of transmission from woman to man | |
| 16. |
Oxidation ponds are shallow ponds, generally designed at the depth of |
| A. | 4 to 6 feet |
| B. | 2 to 40 feet |
| C. | 5 to 8 feet |
| D. | 1 to 3 feet |
| Answer» C. 5 to 8 feet | |
| 17. |
Carl Woese and his colleague are best known for establishing |
| A. | the three domain system |
| B. | the five kingdom system |
| C. | the plant-animal system |
| D. | the prokaryote-eukaryote system |
| Answer» B. the five kingdom system | |
| 18. |
All of the following Vibrio sp.are halophilic,except: |
| A. | V. alginolyticus. |
| B. | V. fluvialis. |
| C. | V. cholerae. |
| D. | V. parahaemolyticus. |
| Answer» D. V. parahaemolyticus. | |
| 19. |
Which of the following is not true for prokaryotic organism? |
| A. | Chromosomes does not contain histones |
| B. | Nucleus is not bounded by nuclear membrane |
| C. | Cell wall contains peptidoglycan as one of the major component |
| D. | 80S ribosomes are distributed in cytoplasm |
| Answer» E. | |
| 20. |
Mycoplasmas, rickettsiae, and chlamydiae are |
| A. | small bacteria |
| B. | types of fungi |
| C. | forms of viruses |
| D. | species of protozoa |
| Answer» B. types of fungi | |
| 21. |
In Transduction, the transmitted by the vector to the bacteria belongs to ? |
| A. | Human cell |
| B. | Bacteriophage |
| C. | Another bacterium |
| D. | Virus |
| Answer» D. Virus | |
| 22. |
A person workin in a abattori presented with pustule on hand which turned into ulcer, which will best help in diagnosis - |
| A. | Acid fast stain |
| B. | Calcoflour white |
| C. | Trichrome methylene blue |
| D. | Carbol fuschin |
| Answer» D. Carbol fuschin | |
| 23. |
Most soil protozoa are flagellates or amoebas, having their dominant mode of nitrogen as |
| A. | ingestion of mold |
| B. | ingestion of bacteria |
| C. | all of these |
| D. | ingestion of fungi |
| Answer» C. all of these | |
| 24. |
Ionic bond is important in |
| A. | non metals in group VI |
| B. | metals of group 1 |
| C. | Both A and B |
| D. | None of These |
| Answer» D. None of These | |
| 25. |
The toxins induce the blood to produce |
| A. | phagocytes |
| B. | antitoxins |
| C. | monocytes |
| D. | platelets |
| Answer» C. monocytes | |
| 26. |
The nematode which resides in the caecum and appendix is ? |
| A. | Ascaris lumbricoides |
| B. | Mansonella ozzardi |
| C. | Etherobius vermicularis |
| D. | All of the above |
| Answer» D. All of the above | |
| 27. |
All are true about Rickettsia Except: |
| A. | Obligate intracellular |
| B. | Gram +ve bacillus |
| C. | Arthropods are vector |
| D. | Weil felix test is diagnostic |
| Answer» C. Arthropods are vector | |
| 28. |
Bacteria which does not strictly follow Koch's postulate is |
| A. | Mycobacteria tuberculosis |
| B. | Mycobacterium avium intercellulare |
| C. | Mycobacterium leprae |
| D. | Bacillus anthracis |
| Answer» D. Bacillus anthracis | |
| 29. |
Weil's disease is caused by ? |
| A. | Leptospira |
| B. | Plague |
| C. | Yersinia |
| D. | Rickettsial fever |
| Answer» B. Plague | |
| 30. |
Most common cause of dysentery in adult is ? |
| A. | Crypto parvum |
| B. | Giardia |
| C. | Strongoloides |
| D. | Entamoeba histolytica |
| Answer» E. | |
| 31. |
In reference to the mycoplasmas, the following are true except - |
| A. | They are inhibited by penicillins |
| B. | They can reproduce in cell free media |
| C. | They have an affinity for mammalian cell membranes |
| D. | They can pass through filters of 450 nm pore size |
| Answer» B. They can reproduce in cell free media | |
| 32. |
Superantigens true is- |
| A. | They are presented by APC's to T cells |
| B. | Directly attached to lateral aspect of TCR B(bita) chain |
| C. | They bind to the cleft of the MHC |
| D. | Needs to proccessed before presentation |
| Answer» C. They bind to the cleft of the MHC | |
| 33. |
A substance which conducts electricity but is not changed during the electrolysis is |
| A. | conductor |
| B. | electrode |
| C. | None of Above |
| D. | insulator |
| Answer» B. electrode | |
| 34. |
The commonest organism causing cellulitis is: |
| A. | Streptococcus pyogenes |
| B. | Streptococcus faecalis |
| C. | Streptococcus viridans |
| D. | Microraerophilic streptococci |
| Answer» B. Streptococcus faecalis | |
| 35. |
Schizonts are not seen in peripheral smear in which type of malaria ? |
| A. | P.Vivax |
| B. | P.Falciparum |
| C. | P.Ovale |
| D. | P.Malariae |
| Answer» C. P.Ovale | |
| 36. |
In the three domain system of classification, the traditional bacteria are placed in the |
| A. | archaea |
| B. | eukarya |
| C. | none of these |
| D. | eubacteria |
| Answer» E. | |
| 37. |
Which of the following is not true about transmission |
| A. | Leptospirosis may be transmitted through water contaminated with rat urine |
| B. | Tetanus may be transmitted through dust and droplets. |
| C. | Legionella may be transmitted through water aerosols |
| D. | Listeria may be transmitted through refrigerated food |
| Answer» C. Legionella may be transmitted through water aerosols | |
| 38. |
Which of the following may cause biliary obstruction: |
| A. | Strongyloides |
| B. | Clonorchis |
| C. | Ancylostoma |
| D. | Entrobius |
| Answer» C. Ancylostoma | |
| 39. |
With reference to infections with Escherichia coli the following are true except: |
| A. | Enterohemorrhagic E. coli can cause haemolytic uraemic syndrome. |
| B. | Enteroaggregative E. coli is associated with Persistant diarrhoea. |
| C. | Enterotoxigenic E. coli is a common cause of travelers' diarrhoea. |
| D. | Enteroinvasive E. coli produces a disease similar to salmonellosis. |
| Answer» E. | |
| 40. |
Microorganisms that enter freshly laid eggs are |
| A. | Salmonella |
| B. | Brucella |
| C. | Shigella |
| D. | Vibrois cholerae |
| Answer» B. Brucella | |
| 41. |
What is the tilt of axis (degrees) of Mercury? |
| A. | Two |
| B. | One |
| C. | Three |
| D. | Zero |
| Answer» E. | |
| 42. |
What is the maximum surface temperature of Mercury? |
| A. | 427?C |
| B. | 122?C |
| C. | 576?C |
| D. | 285?C |
| Answer» B. 122?C | |
| 43. |
HIV pt with malabsotion,fever,chronic diarrhoea,with acid fast positive organism.What is the causative agent ? |
| A. | Microsporidia |
| B. | Giardia |
| C. | E. histolytica |
| D. | Isospora |
| Answer» E. | |
| 44. |
Heat, acids or alkalis easily break the |
| A. | the glucose into galactose |
| B. | coils in proteins structure |
| C. | none of these |
| D. | the saturated fats in cholesterol |
| Answer» C. none of these | |
| 45. |
Ultrafiltration does not retain |
| A. | glucose |
| B. | water |
| C. | all of these |
| D. | amino acids |
| Answer» D. amino acids | |
| 46. |
In negative staining - |
| A. | The structure to be demonstrated is stained |
| B. | The structure to be demonstrated is not stained |
| C. | The background is not stained |
| D. | The background and structure are stained |
| Answer» C. The background is not stained | |
| 47. |
All are dimorphic fungi except - |
| A. | Histoplasma |
| B. | Paracoccidiodes |
| C. | Cryptococcus |
| D. | Blastomyces |
| Answer» D. Blastomyces | |
| 48. |
A young male patient presented with urethral discharge. On urine examination pus cell were found but no organisms.Which method would be the best for culture - |
| A. | L.J. medium |
| B. | Levinthal medium |
| C. | Mc coy cell line |
| D. | Thayer martin medium |
| Answer» D. Thayer martin medium | |
| 49. |
Which of the following is true regarding globi in a patient with lepromatous leprosy: |
| A. | Consists of macrophages filled with AFB |
| B. | Consists of lipid laden macrophages |
| C. | Consists of activated lymphocytes |
| D. | Consists of neutrophils filled with bacteria |
| Answer» B. Consists of lipid laden macrophages | |
| 50. |
All of the following are true about Methicillin resistance in MRSA,except |
| A. | Resistance may be produced by hyperproduction of BETA lactamase |
| B. | Resistance is produced as a result of altered in Penicillin Binding Proteins (PBP) |
| C. | Resistance may be missed at incubation temperature of 37 degree C during susceptibility testing |
| D. | Resistance is primarily mediated /transmitted via plasmids |
| Answer» E. | |