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. |
In most of purple bacteria, the light harvesting centers are |
| A. | B 850 & Fe- |
| B. | B 850 & B 875 |
| C. | B 845 & B 875 |
| D. | B 850 & B830 |
| Answer» C. B 845 & B 875 | |
| 2. |
An example for common air borne epidemic disease |
| A. | Influenza |
| B. | Typhoid |
| C. | Encephalitis |
| D. | Malaria |
| Answer» B. Typhoid | |
| 3. |
For streptomycin production the microorganisms required are |
| A. | Streptomyces griseus |
| B. | Streptomyces niger |
| C. | Saccharomyces cereviceae |
| D. | All of these |
| Answer» B. Streptomyces niger | |
| 4. |
Bacterial resistance to antibiotics istransmitted by |
| A. | Transduction |
| B. | Transformation |
| C. | Mutation |
| D. | Plasmids |
| Answer» E. | |
| 5. |
Best method for getting pure culture is |
| A. | Streak-plate |
| B. | Agar slant |
| C. | Both a & b |
| D. | None of these |
| Answer» D. None of these | |
| 6. |
Koplic’s spots will develop in |
| A. | HIV |
| B. | Measles |
| C. | Mumps |
| D. | Rubella |
| Answer» C. Mumps | |
| 7. |
The primary mode of transmission ofpoliomyelitis virus: |
| A. | Flie |
| B. | Milk |
| C. | Person to person |
| D. | Food and water |
| Answer» E. | |
| 8. |
Over heating of fermentator duringfermentation is controlled by |
| A. | Cooling jacket |
| B. | Steam |
| C. | Cool air |
| D. | None of these |
| Answer» B. Steam | |
| 9. |
The image obtained in a compoundmicroscope is |
| A. | Real |
| B. | Virtual |
| C. | Real inverted |
| D. | Virtual inverted |
| Answer» C. Real inverted | |
| 10. |
Hybridoma technique was developed by |
| A. | Kochler & Milston |
| B. | Niel’s Jerne |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 11. |
Those fungi which do not have a sexualstage are classified as |
| A. | Phycomycete |
| B. | Ascomycetes |
| C. | Basidiomycetes |
| D. | Fungi imperfecti |
| Answer» E. | |
| 12. |
During AIDS, HIV infects |
| A. | CD3 lymphocyte |
| B. | CD4 lymphocytes |
| C. | CD2 lymphocytes |
| D. | Blymphocytes |
| Answer» C. CD2 lymphocytes | |
| 13. |
Toxins and viruses can be detected by |
| A. | Precipitation |
| B. | Agglutination |
| C. | Neutralisation |
| D. | None of these |
| Answer» D. None of these | |
| 14. |
Pus-forming forms are called as |
| A. | Pyoderm |
| B. | Pyogenic |
| C. | Pyrogen |
| D. | None of the above |
| Answer» C. Pyrogen | |
| 15. |
Mediterranian fever is caused by |
| A. | M. tuberculosi |
| B. | S. typhi |
| C. | C.neoformans |
| D. | Brucella |
| Answer» E. | |
| 16. |
The enzyme needed in biological systemsfor joining two molecules is called |
| A. | Lyase |
| B. | Diastases |
| C. | Polymerases |
| D. | Hydrolase |
| Answer» D. Hydrolase | |
| 17. |
Reduction of virulence is known as |
| A. | Exaltation |
| B. | Attenuation |
| C. | Both a and b |
| D. | None of these |
| Answer» C. Both a and b | |
| 18. |
Most bacteria require vitamins as |
| A. | Growth Factors |
| B. | Sources of energy |
| C. | Sources of carbon |
| D. | Sources of electron donars |
| Answer» B. Sources of energy | |
| 19. |
The following are true about Rickettsiae. |
| A. | Unicellular organisms |
| B. | Prokaryotic intracellular parasites |
| C. | Presence of 70 S ribosomes |
| D. | It causes hemolysis in human beings |
| Answer» E. | |
| 20. |
Candidiasis is caused by |
| A. | Candida albican |
| B. | Aspergillus spp. |
| C. | E. floccosum |
| D. | M. audouinii |
| Answer» B. Aspergillus spp. | |
| 21. |
Disease that effects many people atdifferent countries is termed as |
| A. | Sporadic |
| B. | Pandemic |
| C. | Epidemic |
| D. | Endemic |
| Answer» B. Pandemic | |
| 22. |
Toxic products in phagolysosome are |
| A. | H2SO4 |
| B. | Singlet O2 |
| C. | Superoxide radicals |
| D. | All of these |
| Answer» E. | |
| 23. |
Growth period of the culture is |
| A. | Inoculation |
| B. | Incubation |
| C. | Incineration |
| D. | Isolation |
| Answer» C. Incineration | |
| 24. |
To be antigen, the chemical molecule(protein) needs |
| A. | High molecular weight |
| B. | Chemical complexity |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 25. |
Niacin test is positive in case of |
| A. | Corynebacterium |
| B. | M. tuberculosis |
| C. | M. bovis |
| D. | M. avium |
| Answer» C. M. bovis | |
| 26. |
The distance between each turn in thehelical strand of DNA is |
| A. | 20 Ao |
| B. | 34 Ao |
| C. | 28 Ao |
| D. | 42 Ao |
| Answer» C. 28 Ao | |
| 27. |
Virus will contain |
| A. | Cell membrane |
| B. | Cell wall |
| C. | DNA |
| D. | DNA or RNA |
| Answer» E. | |
| 28. |
Identify the obligate anaerobes |
| A. | Salmonella |
| B. | Vibrio cholera |
| C. | Cl. tetani |
| D. | Sarcinae |
| Answer» D. Sarcinae | |
| 29. |
Wh ich of the fo l low ing organ ismsrequires tryptophan for growth? |
| A. | H.influenza |
| B. | Vibrio |
| C. | Gonococci |
| D. | S.typhi |
| Answer» E. | |
| 30. |
In bacteria, the increase in population isin the manner |
| A. | Geometric progression |
| B. | Multiplication |
| C. | Doubling |
| D. | None of these |
| Answer» B. Multiplication | |
| 31. |
Who demonstrated that open tubes of broth remained free of bacteria when air was free of dust. |
| A. | Abbc Spallanzani |
| B. | John Tyndall |
| C. | Francisco Redi |
| D. | Pasteur |
| Answer» C. Francisco Redi | |
| 32. |
The main product of glycolysis underaerobic conditions is |
| A. | Pyruvate |
| B. | Lactate |
| C. | None of these |
| D. | Both a and b |
| Answer» B. Lactate | |
| 33. |
For the separation of antigens the methodused is |
| A. | Immunoelectrophoresis |
| B. | Flocculation |
| C. | Agglutination |
| D. | None of these |
| Answer» B. Flocculation | |
| 34. |
Immediate type hypersensitivity reactionsare |
| A. | Type-I |
| B. | Type-II |
| C. | Type-III |
| D. | All a, b and c |
| Answer» E. | |
| 35. |
Chlamydiae can be stained better with |
| A. | Ziehl neelsen staining |
| B. | Castaneda & Machiavello stains |
| C. | Giminez stains |
| D. | Both b and c |
| Answer» E. | |
| 36. |
Magnification range of light microscope is |
| A. | 1000x – 5000x |
| B. | 1000x – 2000x |
| C. | 500x – 1000x |
| D. | None of these |
| Answer» C. 500x – 1000x | |
| 37. |
A disease that can be transmitted by an infectious agent from one individual to another was called |
| A. | Epidemic |
| B. | Pandemic |
| C. | Communicable |
| D. | Comma |
| Answer» D. Comma | |
| 38. |
Virulence in gonococcus is due to |
| A. | Pili |
| B. | Cell membrane |
| C. | Its cellular location |
| D. | Cyclic enzymes |
| Answer» B. Cell membrane | |
| 39. |
Neisseria gonorrhoeae causes |
| A. | Urethriti |
| B. | Conjuctivitis |
| C. | Arthritis |
| D. | All of the above |
| Answer» E. | |
| 40. |
In a antigen haptens are |
| A. | Immunogenic |
| B. | Non-immunogenic |
| C. | Antigenic |
| D. | None of these |
| Answer» C. Antigenic | |
| 41. |
Immunity is life long following |
| A. | Diphtheria |
| B. | Tetanus |
| C. | Measles |
| D. | Yellow fever |
| Answer» D. Yellow fever | |
| 42. |
In India, malaria most often spreads by |
| A. | Anophels cucifacies |
| B. | Anopheles fluvatis |
| C. | Anopheles stephensi |
| D. | Anopheles minimus |
| Answer» B. Anopheles fluvatis | |
| 43. |
Animals are naturally immune to infectioncaused by |
| A. | V. Cholera |
| B. | S.typhosa |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 44. |
Tumer inducing plasmids are extensivelyused in production of |
| A. | Avirulent phases |
| B. | Single cell proteins |
| C. | Transgenic plants |
| D. | Nitrogen fixing bacteria |
| Answer» D. Nitrogen fixing bacteria | |
| 45. |
Bacterial spores are |
| A. | Weakly acid fast |
| B. | Strongly acid fast |
| C. | Alcohol fast |
| D. | Non acid fast |
| Answer» B. Strongly acid fast | |
| 46. |
Which of the following Salmonellaparatyphi is the commonest in India? |
| A. | A |
| B. | B |
| C. | C |
| D. | None of these |
| Answer» B. B | |
| 47. |
Industrial alchohol will be produced byusing starter culture |
| A. | Top yeast |
| B. | Middle yeast |
| C. | Bottom yeast |
| D. | Feeder yeast |
| Answer» D. Feeder yeast | |
| 48. |
The compound that is added to the medium to absorb oxygen for the creation of anaerobic conditions |
| A. | Sodium Thioglycollate |
| B. | Nitrous acid |
| C. | Citrate |
| D. | None of these |
| Answer» C. Citrate | |
| 49. |
A simple asexual spore which developsby budding is known as |
| A. | Chlamydospore |
| B. | Blastospore |
| C. | Arthospore |
| D. | Conidia |
| Answer» C. Arthospore | |
| 50. |
Very effective, less time consuming andat a time so many samples can be detected by |
| A. | ELISA |
| B. | CFT |
| C. | Neutralization |
| D. | Agglutination |
| Answer» B. CFT | |