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. |
The major constituents in agar are |
| A. | Fat |
| B. | Aminoacids |
| C. | Polysaccharides |
| D. | Polypeptides |
| Answer» D. Polypeptides | |
| 2. |
Small pox vaccine was first discovered by |
| A. | Robert Koch |
| B. | Louis Pasteur |
| C. | Lister |
| D. | Edward Jenner |
| Answer» E. | |
| 3. |
During specialized transduction |
| A. | Large amound of DNA is transferred |
| B. | A few no. of genes are transferred |
| C. | Whole DNA is transferred |
| D. | None of these |
| Answer» C. Whole DNA is transferred | |
| 4. |
BCG vaccine is for the prevention of |
| A. | Brucellosi |
| B. | Diphtheria |
| C. | Botulism |
| D. | Tuberculosis |
| Answer» E. | |
| 5. |
‘Reye’s syndrome’ is caused by |
| A. | St.pneumoniae |
| B. | St.pyogenes |
| C. | Influenza |
| D. | None of these |
| Answer» D. None of these | |
| 6. |
AIDS patients suffer from pneumoniaedue to |
| A. | Pneumocystisis carinii |
| B. | Cryptospodidium |
| C. | S.pneumoniae |
| D. | Toxoplasma |
| Answer» E. | |
| 7. |
Drugs of choice for treatment of Mycoplasma infections: |
| A. | Tetracycline |
| B. | Erythromycin |
| C. | a and b |
| D. | Penicillins |
| Answer» D. Penicillins | |
| 8. |
The microorganism engulfed by phagocyte resides in a vacuole is known as |
| A. | Phagosome |
| B. | Lysosome |
| C. | both a and b |
| D. | None of these |
| Answer» B. Lysosome | |
| 9. |
Lysol is a |
| A. | Sterilent |
| B. | Disinfectant |
| C. | Antiseptic |
| D. | Antifungal agent |
| Answer» C. Antiseptic | |
| 10. |
Fixation of atmospheric nitrogen is bymeans of |
| A. | Biological proces |
| B. | Lightining |
| C. | Ultraviolet light |
| D. | All of the above |
| Answer» E. | |
| 11. |
Bacterial transformation was discoveredby |
| A. | Ederberg and Tatum |
| B. | Beadle and Tatum |
| C. | Griffith |
| D. | None of these |
| Answer» B. Beadle and Tatum | |
| 12. |
Anaphylaxia was first observed by |
| A. | Parter & Richet |
| B. | Coombs |
| C. | Gell |
| D. | None of these |
| Answer» B. Coombs | |
| 13. |
Bacillus Schlegelli is |
| A. | Hydrogen – Oxydising bacteria |
| B. | Sulphur – Oxydising bacteria |
| C. | Iron-Oxidising bacteria |
| D. | Nitrite oxidizing bacteria |
| Answer» B. Sulphur – Oxydising bacteria | |
| 14. |
According to Pasteur statements which one of the following is true |
| A. | Living organisms discriminate between stereoisomers |
| B. | Fermentation is a aerobic process |
| C. | Living organisms doesn’t discriminate between stereoisomers |
| D. | Both a and b |
| Answer» B. Fermentation is a aerobic process | |
| 15. |
Diphtheria bacillus is otherwise known as |
| A. | Fried-Landers bacillus |
| B. | Kleb’s hofflers bacillus |
| C. | Frchs bacillus |
| D. | Koch’s bacillus |
| Answer» C. Frchs bacillus | |
| 16. |
A mechanism that can cause a gene to move from one linkage group to another is |
| A. | Trans location |
| B. | Inversion |
| C. | Crossing over |
| D. | Duplication |
| Answer» B. Inversion | |
| 17. |
Thermo resistant bacteria are importantin the preservation of foods by |
| A. | Freezing |
| B. | Canning |
| C. | Chemicals |
| D. | Irradiation |
| Answer» C. Chemicals | |
| 18. |
ELISA test is used for the identification of |
| A. | Janudice |
| B. | AIDS |
| C. | Cancer |
| D. | Diabetis |
| Answer» C. Cancer | |
| 19. |
The largest protozoa is – |
| A. | Balantidium coli |
| B. | Entamoeba coli |
| C. | Trichomonus vaginalis |
| D. | Toxoplasma gondii |
| Answer» B. Entamoeba coli | |
| 20. |
The ability of Microscope to distinguish two objects into two separate objects, is called. |
| A. | Resolving power |
| B. | Wave length |
| C. | N.A. |
| D. | None of these |
| Answer» B. Wave length | |
| 21. |
Measles is characterized by |
| A. | Negribodies |
| B. | Babes-Ernest granules |
| C. | Koplik’s spots |
| D. | Fever |
| Answer» C. Koplik’s spots | |
| 22. |
During mitosis, synapsis occurs in thephase called |
| A. | Telophase |
| B. | Anaphase |
| C. | Prophase |
| D. | None of the above |
| Answer» D. None of the above | |
| 23. |
In the production of ethanol industriallythe yeast used is |
| A. | K.pneumoniae |
| B. | Kluyreromyces fragilis |
| C. | S. cerevisiae |
| D. | Both b and c |
| Answer» E. | |
| 24. |
Mycotoxins are produced by |
| A. | Bacteria |
| B. | Fungi |
| C. | Algae |
| D. | Protozoans |
| Answer» C. Algae | |
| 25. |
Killed, polio vaccine is |
| A. | Sabin vaccine |
| B. | Salk |
| C. | BCG |
| D. | TAB |
| Answer» B. Salk | |
| 26. |
Bacillus is an example of |
| A. | Gram positive bacteria |
| B. | Gram negative bacteria |
| C. | Virus |
| D. | Viroid |
| Answer» B. Gram negative bacteria | |
| 27. |
What are the structural units of nucleicacids? |
| A. | N-base |
| B. | Nucleosides |
| C. | Nucleotides |
| D. | Histones |
| Answer» D. Histones | |
| 28. |
Clear-zones formation around antibiotic disc is due to |
| A. | Growth of the bacterium surrounding of the disc |
| B. | Lysis of the bacterial cells surrounding the disc |
| C. | The destruction of paper disc (antibiotic) |
| D. | None of these |
| Answer» C. The destruction of paper disc (antibiotic) | |
| 29. |
Drug of choice for methicillin resistantstaph. Aureus is |
| A. | Ampicillin |
| B. | Erythromycin |
| C. | Neomycin |
| D. | Vancomycin |
| Answer» E. | |
| 30. |
In genetic engineering breaks in DNA areformed by enzymes known as |
| A. | Restriction enzymes |
| B. | Ligases |
| C. | Nucleases |
| D. | Hydralases |
| Answer» C. Nucleases | |
| 31. |
The most common mode of cell divisionin bacteria is |
| A. | Binary fission |
| B. | Transverse binary fission |
| C. | Longitudinal binary fission |
| D. | None of these |
| Answer» D. None of these | |
| 32. |
The diagrammatic representation of thetotal no. of genes in DNA is |
| A. | Genome |
| B. | Gene map |
| C. | Gene-structure |
| D. | Chromatin |
| Answer» C. Gene-structure | |
| 33. |
Culture medium for clostridia spp. |
| A. | 76 Lower stein Jensen’s medium |
| B. | Mac Conkey’s medium |
| C. | Robertson’s cooked meat medium |
| D. | None of these |
| Answer» D. None of these | |
| 34. |
The transfer of genetic material during transformation is proved basing on Griffith’s experiment by |
| A. | Avery Macleod & Mc.Carthy |
| B. | Lederberg & Taulum |
| C. | Zinder & Lederberg |
| D. | Watson & Crick |
| Answer» B. Lederberg & Taulum | |
| 35. |
Antigenic variation is most extensive in |
| A. | Influenza viru |
| B. | Small pox virus |
| C. | Measles virus |
| D. | Herpes virus |
| Answer» B. Small pox virus | |
| 36. |
All of the following are energy source ofbacteria except |
| A. | Oxidation of inorganic compounds |
| B. | Oxidation of organic compounds |
| C. | Absorption of heat |
| D. | Utilisation of visible light |
| Answer» D. Utilisation of visible light | |
| 37. |
Main causative organism of gas gangrene is |
| A. | anthrax b. Clostridium tetani |
| B. | Cl.deficile |
| C. | Cl.perfringens |
| Answer» E. | |
| 38. |
Shick test is used for the detection of |
| A. | Diphtheria |
| B. | T.B. |
| C. | Cholera |
| D. | Typhoid |
| Answer» B. T.B. | |
| 39. |
Prophylaxis of cholera is |
| A. | Protected water supply |
| B. | Environmental sanitation |
| C. | Immunisation with killed vaccines |
| D. | All of these |
| Answer» E. | |
| 40. |
The percentage of O2 required by moderate anaerobe is |
| A. | 0% |
| B. | < 0.5% |
| C. | 2 – 8% |
| D. | 5 – 10% |
| Answer» D. 5 – 10% | |
| 41. |
Example of Anaerobic medium is |
| A. | Robertson cooked-meat medium |
| B. | Nutrient agar |
| C. | Nutrient broth |
| D. | Mac-Conkey’s agar |
| Answer» B. Nutrient agar | |
| 42. |
Antifoam agent is |
| A. | Silicon compound |
| B. | Corn oil |
| C. | Soyabean oil |
| D. | All of these |
| Answer» E. | |
| 43. |
Blood agar medium is |
| A. | Enrichment medium |
| B. | Enriched medium |
| C. | Selective medium |
| D. | Differential medium |
| Answer» C. Selective medium | |
| 44. |
Which algae is pathogenic to human? |
| A. | Cephaloeuro |
| B. | Ulothrix |
| C. | Macrocystis |
| D. | Prototheca |
| Answer» E. | |
| 45. |
In Electron Microscope source of electronsis from |
| A. | Mercury lamp |
| B. | Tungsten metal |
| C. | both a and b |
| D. | None of these |
| Answer» C. both a and b | |
| 46. |
Which is most antigenic? |
| A. | Exotoxin |
| B. | Endotoxins |
| C. | Viruses |
| D. | All of these |
| Answer» B. Endotoxins | |
| 47. |
Agglutination reaction is strongest withthe immunoglobulin: |
| A. | IgM |
| B. | IgG |
| C. | IgA |
| D. | IgD |
| Answer» B. IgG | |
| 48. |
C.diphtheriae requires |
| A. | LJ medium |
| B. | Mac Conkey’s medium |
| C. | Potassium tellurite medium |
| D. | PDA medium |
| Answer» D. PDA medium | |
| 49. |
For the production of ethanol the rawmaterial used is |
| A. | Molasses |
| B. | Cellulose |
| C. | Sulphite waste liquor |
| D. | None of these |
| Answer» D. None of these | |
| 50. |
A common laboratory method ofcultivating anaerobic micro-organisms is |
| A. | Gas pack system |
| B. | Brewer jar system |
| C. | Pyrogallic acid over the cotton |
| D. | None of these |
| Answer» D. None of these | |