MCQOPTIONS
Saved Bookmarks
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 generation time is |
| A. | The time required for the cell to divide |
| B. | The total division of the cell during its life time |
| C. | The total no.of cells formed |
| D. | None of these |
| Answer» D. None of these | |
| 2. |
Chloramphenicol is obtained from |
| A. | Streptomyces griseus |
| B. | Streptomyces venezuelae |
| C. | Streptomyces pyrogenes |
| D. | None of these |
| Answer» C. Streptomyces pyrogenes | |
| 3. |
Immunoglobin which are found in asthmaat elevated level: |
| A. | IgA |
| B. | IgE |
| C. | IgM |
| D. | IgD |
| Answer» C. IgM | |
| 4. |
Active immunity is induced by |
| A. | Infection |
| B. | Placental transfer of antibodies |
| C. | Injection of antibodies |
| D. | Injection of gamma- globulins |
| Answer» B. Placental transfer of antibodies | |
| 5. |
Fimbriae are demonstrated by |
| A. | Culture |
| B. | Gram stain |
| C. | Biochemical reactions |
| D. | Haemaggulation test |
| Answer» E. | |
| 6. |
Viruses which have teratogenic propertyare |
| A. | Herpes simplex virus |
| B. | Cytomegalovirus |
| C. | Rubella virus |
| D. | All of these |
| Answer» E. | |
| 7. |
The techn ique used to avo id all microorganisms is accomplished by |
| A. | Sterlization |
| B. | Disinfection |
| C. | Surgical sterilization |
| D. | Disinfection Sterilization |
| Answer» B. Disinfection | |
| 8. |
Algae means |
| A. | Fresh water organisms |
| B. | Sea weeds |
| C. | Fresh water weeds |
| D. | None of these |
| Answer» C. Fresh water weeds | |
| 9. |
Wh ich of the fo l low ing is ion iz ingradiation? |
| A. | U.V. ray |
| B. | IR |
| C. | γ-rays |
| D. | None of these |
| Answer» D. None of these | |
| 10. |
During destruction of antigen particle in phagolysosome the product formed in phagolysosome the product formed during formulation is |
| A. | Acetic acid |
| B. | Lactic acid |
| C. | Citric acid |
| D. | None of these |
| Answer» C. Citric acid | |
| 11. |
Which one of the following bacteria has found extensive use in genetic engineering work in plants? |
| A. | Clostridum septicum |
| B. | Xanthomonas oriza |
| C. | Bacillus coagulens |
| D. | Agrobacterium tumefaciens |
| Answer» E. | |
| 12. |
For amy lase product ion the m icroorganism required is |
| A. | subtilis b. S. cereviceae |
| Answer» B. | |
| 13. |
In the citric acid production, the pH to bemaintained in the fernmenter is |
| A. | 7.0 |
| B. | 5.0 to 6.0 |
| C. | 8.0 to 9.0 |
| D. | 1.0 to 6.0 |
| Answer» C. 8.0 to 9.0 | |
| 14. |
β-haemolytic bacteria is |
| A. | Streptococcus pyogenes |
| B. | Str. pneumoniae |
| C. | Str. viridans |
| D. | Str. faecalis |
| Answer» B. Str. pneumoniae | |
| 15. |
Streptolysin ‘S’ is |
| A. | Oxygen unstable |
| B. | Thermostable |
| C. | Oxygen stable |
| D. | None of these |
| Answer» D. None of these | |
| 16. |
Industrially important Antibiotic producing organisms shall be isolated by |
| A. | Disk plate method |
| B. | Direct plate method |
| C. | Serial dilution method |
| D. | Crowded plate method |
| Answer» E. | |
| 17. |
Spores are killed by |
| A. | 70% alcohol |
| B. | Glutaraldehyde |
| C. | Autoclaving |
| D. | Both b and c |
| Answer» E. | |
| 18. |
During staining for Electron Microscopy, the method which improves contrast of specimen is |
| A. | Positive staining |
| B. | Negative staining |
| C. | Shadow staining |
| D. | None of these |
| Answer» C. Shadow staining | |
| 19. |
Phosphorous is an essential componentof |
| A. | Nucleotides |
| B. | Nucleic acids |
| C. | Phospholipids and Heichoic acids |
| D. | All the above |
| Answer» E. | |
| 20. |
The principle involved in the streak platemethod is |
| A. | Separation |
| B. | Streaking |
| C. | Isolation |
| D. | Dilution |
| Answer» E. | |
| 21. |
Which of the following involves theformation of nitrate from ammonia |
| A. | Ammonification |
| B. | Denitrification |
| C. | Nitrification |
| D. | Nitrogen fixation |
| Answer» D. Nitrogen fixation | |
| 22. |
The pyruvate, dehydrogenase → multienzyme complex does not occur in |
| A. | Aerobic bacteria |
| B. | Microphilic bacteria |
| C. | Facultative anaerobic bacteria |
| D. | Strictly anaerobic bacteria |
| Answer» C. Facultative anaerobic bacteria | |
| 23. |
The treatment required for small bodiesof water is |
| A. | Disinfection |
| B. | Filtration |
| C. | Purification |
| D. | All of these |
| Answer» E. | |
| 24. |
Thermal death time is |
| A. | Time required to kill all cells at a given temperature |
| B. | Temperature that kills all cells in a given time |
| C. | Time and temperature needed to kill all cells |
| D. | All of the above |
| Answer» C. Time and temperature needed to kill all cells | |
| 25. |
Rapid bacterial growth phase is known as |
| A. | Log |
| B. | Lag |
| C. | Lack |
| D. | None of these |
| Answer» B. Lag | |
| 26. |
Streptococci which are destroyed at 60°Cfor 30 minutes |
| A. | Preptostreptococci |
| B. | Strepto viridans |
| C. | Strepto hemolyticus |
| D. | All of these |
| Answer» E. | |
| 27. |
Which of the following is the charachteristic of bacterial spore? |
| A. | Highly refractile |
| B. | Usually dehydrated |
| C. | Sensitive to formaldehyde |
| D. | All of these |
| Answer» E. | |
| 28. |
The following organisms have been proposed as sources of single cell protein |
| A. | Bacteria |
| B. | Yeasts |
| C. | Algae |
| D. | All the three |
| Answer» E. | |
| 29. |
Rh factor of the blood was discovered byscientist |
| A. | Louis Pasteur |
| B. | Landsteiner and Weiner |
| C. | Janskey |
| D. | Moss |
| Answer» C. Janskey | |
| 30. |
The group of bacteria which deopends on organic sources in nature for their energy requirements. They are said to be |
| A. | Chemotroph |
| B. | Phototrophs |
| C. | Heterotrophes |
| D. | Organotrophs |
| Answer» D. Organotrophs | |
| 31. |
During Bio Geo chemical cycle some amount of elemental carbon was utilized by the microorganisms. The phenomenon is called as |
| A. | Dissimilation |
| B. | Immobilization |
| C. | Decomposition |
| D. | Neutralization |
| Answer» C. Decomposition | |
| 32. |
Endotoxin produced by gramnegativebacteria is present in |
| A. | Peptidoglycan |
| B. | Lippolysacharide |
| C. | Theichoic acid |
| D. | Inner membrane |
| Answer» C. Theichoic acid | |
| 33. |
Which one of the following mutagens actonly on replicating DNA? |
| A. | Ethidium bromide |
| B. | Nitrosogeranidine |
| C. | Acridine orange |
| D. | None of above |
| Answer» D. None of above | |
| 34. |
The study of algae is known as |
| A. | Algalogy |
| B. | Phycology |
| C. | Mycology |
| D. | Bacteriology |
| Answer» C. Mycology | |
| 35. |
Vibrio Cholerae was discovered by |
| A. | Koch |
| B. | Metchnikoff |
| C. | John Snow |
| D. | Virchow |
| Answer» C. John Snow | |
| 36. |
Tinea versicolor is caused by |
| A. | Candida albican |
| B. | Malassezia furfur |
| C. | Aspergillus niger |
| D. | None of these |
| Answer» C. Aspergillus niger | |
| 37. |
Confirmatory test for AIDS is |
| A. | Western blot test |
| B. | ELISA test |
| C. | Karpas test |
| D. | Fujerbio test |
| Answer» B. ELISA test | |
| 38. |
Antibiotic produced from streptomycesorientalis is |
| A. | Streptomycin |
| B. | Penicillin |
| C. | Vancomycin |
| D. | Both a and b |
| Answer» D. Both a and b | |
| 39. |
The bacterial cell multiplication is usually by |
| A. | Mitosi |
| B. | Meiosis |
| C. | Conjugation |
| D. | Binary-fission |
| Answer» E. | |
| 40. |
Gasgangarene bacillus is |
| A. | Facultative anaerobe |
| B. | Obligate anaerobe |
| C. | Facultative aerobe |
| D. | Obligate aerobe |
| Answer» C. Facultative aerobe | |
| 41. |
Pasteur developed the vaccines for |
| A. | Anthrax |
| B. | Rabies |
| C. | Chicken cholera |
| D. | All of the above |
| Answer» E. | |
| 42. |
Splenomegaly is an important manifestation of |
| A. | Kala-agar |
| B. | Typhoid |
| C. | Malaria |
| D. | All of these |
| Answer» E. | |
| 43. |
Tobacco and tea leaves are fermented to give flavour and taste. This type of fermentation is known as |
| A. | Alcohol fermentation |
| B. | Curing |
| C. | Degradation |
| D. | Lactic acid fermentation |
| Answer» C. Degradation | |
| 44. |
6-amino penicillic acid is prepared frompenicillin sps by |
| A. | Acylase |
| B. | Punicillin acylase |
| C. | Penicillinone |
| D. | None of these |
| Answer» C. Penicillinone | |
| 45. |
Transformation was observed mainly in |
| A. | Bacteriophage |
| B. | Temperate phages |
| C. | λ –phage |
| D. | All of these |
| Answer» C. λ –phage | |
| 46. |
Bacterial locomotion is accomplished by |
| A. | Fimbria |
| B. | Flagella |
| C. | Cytoskeleton |
| D. | Both a and b |
| Answer» E. | |
| 47. |
If only one stain is used for staining a specimen |
| A. | Simple staining |
| B. | Negative staining |
| C. | Differential staining |
| D. | None of these |
| Answer» B. Negative staining | |
| 48. |
Japanese encephalitis is caused by |
| A. | Toga Viruse |
| B. | Arbo Viruses |
| C. | Para myxo Viruses |
| D. | Ortho myxo Viruses |
| Answer» C. Para myxo Viruses | |
| 49. |
Genetic constitution of the cell is |
| A. | Phenotype |
| B. | Genotype |
| C. | Cryptotype |
| D. | Histotype |
| Answer» C. Cryptotype | |
| 50. |
Which of the following characters arerelated to viruses? |
| A. | No growth on inanimate culture media |
| B. | Not sensitive to antibiotics |
| C. | No energy producing enzymes |
| D. | Insensitive to interferon |
| Answer» E. | |