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. |
A successful hybridoma was produced by fusing |
| A. | Plasma cells and plasmids |
| B. | Plasma cells and myeloma cells |
| C. | Myeloma cells and plasmids |
| D. | Plasma cells and bacterial cells |
| Answer» C. Myeloma cells and plasmids | |
| 2. |
The extra cellular infections virus particleis called |
| A. | Capsid |
| B. | Nucleocapsid |
| C. | Virion |
| D. | None of these |
| Answer» D. None of these | |
| 3. |
In electron microscope, what material isused as an objective lense? |
| A. | Magnetic coils |
| B. | Superfine glass |
| C. | Aluminium foils |
| D. | Electrons |
| Answer» B. Superfine glass | |
| 4. |
Antigenic specificity is due to |
| A. | Chemical complexity |
| B. | Solubility |
| C. | Steric configuration |
| D. | All of these |
| Answer» D. All of these | |
| 5. |
The reaction of soluble antigen withantibody is known by |
| A. | Precipitation |
| B. | Flocculation |
| C. | Agglutination |
| D. | Complement fixation |
| Answer» B. Flocculation | |
| 6. |
The penicillin produced in large scalesubmerged fermentations are |
| A. | Penicillin-A |
| B. | Penicillin-D |
| C. | Penicillin-G |
| D. | None of these |
| Answer» D. None of these | |
| 7. |
To prepare vaccine for small pox, thematerial used by Edward Jenner is |
| A. | Small pox material |
| B. | Chicken pox material |
| C. | Cow-pox material |
| D. | Measles material |
| Answer» D. Measles material | |
| 8. |
Freeze-etch particles (used in preparing cell for electron microscopy) can be located in the |
| A. | Cytoplasm |
| B. | Cell wall |
| C. | Cell membrane |
| D. | Nucleus |
| Answer» D. Nucleus | |
| 9. |
Virulence of the microorganisms can be reduced by |
| A. | Attenuation |
| B. | A virulence |
| C. | Inactivation |
| D. | Freezing |
| Answer» B. A virulence | |
| 10. |
Influenza is belonging to |
| A. | Orthomyxoviridae |
| B. | Retroviridae |
| C. | Both a and b |
| D. | None of these |
| Answer» B. Retroviridae | |
| 11. |
Virion means |
| A. | Infectious virus particles |
| B. | Non-infectious particles |
| C. | Incomplete particles |
| D. | Defective virus particles |
| Answer» D. Defective virus particles | |
| 12. |
Presence of viruses in the blood streamis known as |
| A. | Viraemia |
| B. | Bacteraemia |
| C. | Septicaemia |
| D. | Pyemia |
| Answer» B. Bacteraemia | |
| 13. |
The natural reservoir of infection forcholera is |
| A. | Flie |
| B. | Horse |
| C. | Man |
| D. | None of these |
| Answer» D. None of these | |
| 14. |
Main cause for Cholera is |
| A. | Poverty and insanitation |
| B. | Mosquitoes |
| C. | Toxin produced by pesticides |
| D. | None of these |
| Answer» B. Mosquitoes | |
| 15. |
Yeast extract is an excellent source of |
| A. | A Vitamin |
| B. | Proteins |
| C. | B Vitamin |
| D. | Carbohydrates |
| Answer» D. Carbohydrates | |
| 16. |
Pick out the vector using in humanGenome project |
| A. | Phagemid vector |
| B. | Yeast artificial chromosomes |
| C. | Cosmid vectors |
| D. | Yeast episomal plasmids |
| Answer» C. Cosmid vectors | |
| 17. |
The genetic material in HIV is |
| A. | ds DNA |
| B. | ss DNA |
| C. | s RNA |
| D. | None of these |
| Answer» B. ss DNA | |
| 18. |
_____ is a genetic disease charachterized by a total or partial inability to synthesize globulins. |
| A. | Apitososis |
| B. | Agamma globulinemia |
| C. | Gammaglobulinemma |
| D. | Sickle-cell anemia. |
| Answer» C. Gammaglobulinemma | |
| 19. |
The following organisms lack definite cell wall |
| A. | Mycoplasma |
| B. | L-forms |
| C. | Both a and b |
| D. | Bacteria |
| Answer» D. Bacteria | |
| 20. |
Enterotoxin responsible for food poisoningis secreted by |
| A. | Enterococci |
| B. | Entamoeba histolytica |
| C. | Enterobacteriaceae |
| D. | Straphylococci |
| Answer» E. | |
| 21. |
The organism responsible for retarding penetration of host cell by an inhibitor of ATP synthesis. |
| A. | M.pneumoniae |
| B. | Rickettsia rickettsii |
| C. | Chlamydia trachomatis |
| D. | Chlamydia psitacci |
| Answer» C. Chlamydia trachomatis | |
| 22. |
The main difference in true bacteria andmycoplasma is that it does not posses – |
| A. | Flagella |
| B. | Cell wall |
| C. | ATP synthesis |
| D. | A capsule |
| Answer» C. ATP synthesis | |
| 23. |
Kinetosomes are observed in |
| A. | Algae |
| B. | Fungi |
| C. | Protozoa |
| D. | Viruses |
| Answer» D. Viruses | |
| 24. |
The causative agent of conjunctivitis: |
| A. | Adeno viru |
| B. | Corono virus |
| C. | Paramyxo virus |
| D. | None of these |
| Answer» B. Corono virus | |
| 25. |
The test used to detect the deaminationof the amino acids by bacteria |
| A. | Nessler’s reagent test |
| B. | Proteolytic test |
| C. | Lactose test |
| D. | Rose aindole reagent test |
| Answer» B. Proteolytic test | |
| 26. |
Cows can digest straw because they contain |
| A. | Cellulose hydrolyzing microorganisms |
| B. | Protein hydrolyzing bacteria |
| C. | Lipid hydrolyzing microorganisms |
| D. | Amino acid degrading bacteria |
| Answer» B. Protein hydrolyzing bacteria | |
| 27. |
The gene transfer occurs by – |
| A. | Transformation |
| B. | Transduction |
| C. | Conjugation |
| D. | Cell fusion |
| Answer» B. Transduction | |
| 28. |
A cell becomes flaccid when placed in a |
| A. | Isotonic solution |
| B. | Hypertonic solution |
| C. | Hypotonic solution |
| D. | Normal solution |
| Answer» C. Hypotonic solution | |
| 29. |
Salmonella which can cause prolongsepticaemia. |
| A. | Salmonella anetum |
| B. | Salmonella cholerasuis |
| C. | Salmonella typhimurium |
| D. | Salmonella entritidis |
| Answer» C. Salmonella typhimurium | |
| 30. |
The percentage of alcohol used in Gramstaining is |
| A. | 75% |
| B. | 90% |
| C. | 60% |
| D. | 25% |
| Answer» C. 60% | |
| 31. |
The pH , to be ma inta ined for theproduction of penicillin is |
| A. | 7.5 |
| B. | 6.5 |
| C. | 8.0 |
| D. | 5.0 |
| Answer» C. 8.0 | |
| 32. |
Counter immunoelectrophoresis is usefulfor detection of |
| A. | One antigen/antibody |
| B. | Two antigens/antibody |
| C. | More than two |
| D. | None of these |
| Answer» B. Two antigens/antibody | |
| 33. |
Role of magnesium in vaccine is |
| A. | Adjuvant |
| B. | Stabilizer |
| C. | Conditioner |
| D. | All of these |
| Answer» C. Conditioner | |
| 34. |
How much time a bacterium take for thecomplete duplication? |
| A. | 30 min. |
| B. | 10 min. |
| C. | 20 min. |
| D. | 25 min. |
| Answer» D. 25 min. | |
| 35. |
Example of anaerobic medium |
| A. | Wilson blair medium |
| B. | Mac conkey broth |
| C. | Robertson’s cooked meat medium |
| D. | EMB agar |
| Answer» D. EMB agar | |
| 36. |
Common cold is caused by |
| A. | Adeno viru |
| B. | Corono virus |
| C. | Hepatitis virus |
| D. | Pox virus |
| Answer» C. Hepatitis virus | |
| 37. |
Lederberg and Tatum (1946) describedthe phenomena of |
| A. | Conjunction |
| B. | Transformation |
| C. | Mutation |
| D. | Plasmids |
| Answer» B. Transformation | |
| 38. |
In E.Coli att site is in between |
| A. | Gal and biogenes |
| B. | Bio and niacin genes |
| C. | Gal and B genes |
| D. | None of these |
| Answer» B. Bio and niacin genes | |
| 39. |
Sulphur can be utilized by bacteria in theform of |
| A. | Organic compounds |
| B. | Inorganic compounds |
| C. | Elemental compounds |
| D. | All of the above |
| Answer» B. Inorganic compounds | |
| 40. |
Nucleic acids contain |
| A. | Alanine |
| B. | Adenine |
| C. | Lysine |
| D. | Arginine |
| Answer» C. Lysine | |
| 41. |
Because of denaturat ion, ant igensbecome functionless, these are called: |
| A. | Cross-reactive antigens |
| B. | Epitopes |
| C. | Hidden epitopes |
| D. | Forssman antigens |
| Answer» D. Forssman antigens | |
| 42. |
Streptococcus pyogenes classification isbased on |
| A. | Protein M |
| B. | Protein T |
| C. | Protein R |
| D. | Polysaccharide C |
| Answer» B. Protein T | |
| 43. |
Secondary function of complements are |
| A. | Haemolysi |
| B. | Phagocytosis |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 44. |
A man is usually infected for tick typhusby – |
| A. | Drinking milk of sick animals |
| B. | Tending cattle |
| C. | Inhaling infected dust |
| D. | All of these |
| Answer» D. All of these | |
| 45. |
Large vessel containing all the parts and condition necessary for the growth of desired microorganisms is called |
| A. | Bio reactor |
| B. | Auto reactor |
| C. | Impeller |
| D. | None of these |
| Answer» B. Auto reactor | |
| 46. |
Electron Microscope was discovered by |
| A. | Prof. Fritz |
| B. | Janssen and Hans |
| C. | Knoll and Ruska |
| D. | None of these |
| Answer» D. None of these | |
| 47. |
Most important Penicillium toxins are |
| A. | Citrinin |
| B. | Patulin |
| C. | Penicillic acid |
| D. | All of the above |
| Answer» E. | |
| 48. |
On Mac Conkey’s medium Esch. Coli forms |
| A. | Colorless colonies |
| B. | Greenish pigmentation |
| C. | Pink coloured colonies |
| D. | Medusa head appearance |
| Answer» D. Medusa head appearance | |
| 49. |
Which one of the following produce typical fried egg appearance colonies on solid media? |
| A. | Mycobacteria |
| B. | Mycoplasts |
| C. | Mycoplasms |
| D. | Bacteroides |
| Answer» D. Bacteroides | |
| 50. |
Pseudomonas aeruginosa was first named |
| A. | Schroeter and Gessard |
| B. | Robert Koch |
| C. | Louis Pasteur |
| D. | Edward Jenner |
| Answer» B. Robert Koch | |