MCQOPTIONS
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MCQOPTIONS
This section includes 1031 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The reproduction rate is equal to deathrate in which stage |
| A. | Decline phase |
| B. | Stationary phase |
| C. | Lag phase |
| D. | Log phase |
| Answer» E. | |
| 2. |
The characteristic shape of the bacteriais maintained because of |
| A. | Capsule |
| B. | Cell wall |
| C. | Cell membrane |
| D. | Slime layer |
| Answer» C. Cell membrane | |
| 3. |
The etiologic agent of botulism is a |
| A. | Neurotoxin |
| B. | Endotoxin |
| C. | Enterotoxin |
| D. | All of the above |
| Answer» B. Endotoxin | |
| 4. |
Streptomycin is obtained from |
| A. | Streptococcus species |
| B. | Streptomyces griseus |
| C. | Straphylococcus aureus |
| D. | None of these |
| Answer» B. Streptomyces griseus | |
| 5. |
The length of each coil in DNA strand is |
| A. | 15 Ao |
| B. | 34 Ao |
| C. | 30 Ao |
| D. | 5 Ao |
| Answer» C. 30 Ao | |
| 6. |
The cellular immune response is mediatedby |
| A. | B cell |
| B. | T cell |
| C. | BT cells |
| D. | Endothelial cells |
| Answer» B. T cell | |
| 7. |
What is the strength of the bond betweenantigen and antibody? |
| A. | Affinity |
| B. | Avidity |
| C. | Covalent |
| D. | None of these |
| Answer» C. Covalent | |
| 8. |
Spirochete is |
| A. | Gonococci |
| B. | Strphylococci |
| C. | Treponema pallidum |
| D. | Streptococci |
| Answer» D. Streptococci | |
| 9. |
The average incubation period of tetanus is |
| A. | 2-3 day |
| B. | 7-10 days |
| C. | 14-21 days |
| D. | 3-4 weeks |
| Answer» C. 14-21 days | |
| 10. |
Monoclonal antibodies are produced by |
| A. | Hybridoma technology |
| B. | Biotechnology |
| C. | Fermentation Technology |
| D. | None of these |
| Answer» B. Biotechnology | |
| 11. |
Virulence factor for Stre. pneumoniae: |
| A. | Capsular polysaccharide |
| B. | Specific soluble substance |
| C. | Vi-antigen |
| D. | Forsmann antigen |
| Answer» B. Specific soluble substance | |
| 12. |
Shape of bacteriophage is |
| A. | Brick shape |
| B. | Bullet shape |
| C. | Helical shape |
| D. | Tadpole shape |
| Answer» E. | |
| 13. |
The animals most frequently infected withanthrax are |
| A. | Sheep |
| B. | Cattle |
| C. | Goats |
| D. | All of these |
| Answer» E. | |
| 14. |
The causative agent of tetanus is |
| A. | Clostridium botulinum |
| B. | Cl. tetani |
| C. | Cl. welchii |
| D. | Cl. perfringens |
| Answer» C. Cl. welchii | |
| 15. |
The nucleus controls protein synthesis inthe cytoplasm by sending |
| A. | Chromatin |
| B. | A DNA template |
| C. | m RNA molecule |
| D. | A pecialized protein |
| Answer» D. A pecialized protein | |
| 16. |
Drugs used against tuberculosis (TB) are |
| A. | Refampicin, Isoniazid |
| B. | Pyrazinamide, Streptomycin |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 17. |
Transgenic animals are for improvement of the quality of |
| A. | Milk |
| B. | Meat |
| C. | Eggs |
| D. | All of the above |
| Answer» E. | |
| 18. |
The effect of antibiotics on micro organisms is mainly due to |
| A. | Inhibition of cell-wall synthesis |
| B. | Damage to the cytoplasmic membrane |
| C. | Inhibition of nucleic acid and protein synthesis |
| D. | All of the above |
| Answer» E. | |
| 19. |
If more than one microorganism is used to obtain the required product, that type of fermentation is called |
| A. | Batch |
| B. | Continuous |
| C. | Dual |
| D. | Fed-batch |
| Answer» D. Fed-batch | |
| 20. |
Capacity of antigen to breakdown into small fragments eachwith a single epitopic region is known as |
| A. | Solubility |
| B. | Froeignness |
| C. | Denaturation |
| D. | None of these |
| Answer» B. Froeignness | |
| 21. |
During cyclic phosphorylation NADP isformed or not. |
| A. | No NADP formation |
| B. | No NADP utilization |
| C. | NADP is converted into NADPH |
| D. | All are correct |
| Answer» B. No NADP utilization | |
| 22. |
Vector for leishmaniasis is |
| A. | Tick |
| B. | Mite |
| C. | Sand fly |
| D. | Tsetse fly |
| Answer» D. Tsetse fly | |
| 23. |
Coryne bacterium is |
| A. | Gram positive |
| B. | Resistant to Penicillin |
| C. | Gram negative |
| D. | Resistant to Chloramphenicol |
| Answer» B. Resistant to Penicillin | |
| 24. |
Test used for AIDS is |
| A. | Widal test |
| B. | ELISA |
| C. | Aggluatination |
| D. | CFT |
| Answer» C. Aggluatination | |
| 25. |
Causative agent of African histoplasmosis |
| A. | Histoplasma capsulatum |
| B. | Histoplasma duboissi |
| C. | Aspergillus niger |
| D. | Aspergillus flavus |
| Answer» C. Aspergillus niger | |
| 26. |
Microorganisms used for alcohol production |
| A. | Saccharomyces sereviceae |
| B. | Bacillus subtilis |
| C. | Penicillium chrysogenum |
| D. | None of these |
| Answer» B. Bacillus subtilis | |
| 27. |
Dengue virus is transmitted from man toman by the |
| A. | Sand fly |
| B. | Ticks |
| C. | Aedes aegypti |
| D. | Culex |
| Answer» D. Culex | |
| 28. |
Salt and sugar preserve foods becausethey |
| A. | Make them acid |
| B. | Produce a hypotonic environment |
| C. | Deplete nutrients |
| D. | Produce a hypertonic environment |
| Answer» E. | |
| 29. |
Natural killer cells |
| A. | Belongs to B-cell lineage |
| B. | Belongs to T-cell lineage |
| C. | Display cytotoxic effect on tumour cell |
| D. | Require previous antigen exposure for activation |
| Answer» D. Require previous antigen exposure for activation | |
| 30. |
Which of the following is a true statement regarding Purified Protine Derivative (PPD) used in tuberculin test? |
| A. | Prepared from tubercle bacilli |
| B. | It is inferior to old tuberculin |
| C. | Consists of filtrate of glycerol broth |
| D. | None of these |
| Answer» B. It is inferior to old tuberculin | |
| 31. |
Which anti rabic vaccine has been recommended by WHO as the most effective? |
| A. | Duck embryo vaccine |
| B. | HDCS vaccine |
| C. | Sheep brain vaccine |
| D. | BPL vaccine |
| Answer» C. Sheep brain vaccine | |
| 32. |
Separation of a single bacterial colony iscalle |
| A. | Isolation |
| B. | Separation |
| C. | Pure culturing |
| D. | All of these |
| Answer» B. Separation | |
| 33. |
All of the following are bacteriostaticchemotherapeutic agents except |
| A. | Bacitracin |
| B. | Chloramphenicol |
| C. | Novobiocin |
| D. | Tetracycline |
| Answer» B. Chloramphenicol | |
| 34. |
Factors on which disinfectivity of a disinfectant depends |
| A. | Concentration of the substance |
| B. | Time of action |
| C. | pH of the medium and temperature suitable for the chemical |
| D. | All of the above |
| Answer» E. | |
| 35. |
Infection that results in pus formation arecalled |
| A. | Focal infection |
| B. | Acute infection |
| C. | Pyogenic infection |
| D. | Chronic infection |
| Answer» D. Chronic infection | |
| 36. |
By-product of acetone-butanol fermentation include |
| A. | Riboflavin |
| B. | Penicillin |
| C. | Isopropanol |
| D. | All of these |
| Answer» B. Penicillin | |
| 37. |
The antibacterial action of penicillin is dueto its effect on |
| A. | Cell membrane permeability |
| B. | Cell wall synthesis |
| C. | DNA synthesis |
| D. | Protein synthesis |
| Answer» C. DNA synthesis | |
| 38. |
The light emitted by luminescent bacteriais mediated by the enzyme |
| A. | Coenzyme Q |
| B. | Luciferase |
| C. | Lactose dehydrogenase |
| D. | Carboxylase reductase |
| Answer» D. Carboxylase reductase | |
| 39. |
The most infectious food borne disease is |
| A. | Tetanu |
| B. | Dysentery |
| C. | Gas gangrene |
| D. | Botulism |
| Answer» E. | |
| 40. |
Resistant to drugs in tuberculosisdevelops by |
| A. | Transduction |
| B. | Transformation |
| C. | Conjugation |
| D. | Mutation |
| Answer» E. | |
| 41. |
Pellicle is found in only |
| A. | Algae |
| B. | Fungi |
| C. | Bacteria |
| D. | Protozoans |
| Answer» E. | |
| 42. |
A culture medium the exact compositionof which is not known was called as |
| A. | Simple |
| B. | Complex |
| C. | Defined |
| D. | Natural |
| Answer» B. Complex | |
| 43. |
Lysozyme is effective against |
| A. | Gram negative bacteria |
| B. | Gram positive bacteria |
| C. | Protozoa |
| D. | Helminthes |
| Answer» C. Protozoa | |
| 44. |
The free floating algae are known as |
| A. | Phytoplankin |
| B. | Benthons |
| C. | Sea weeds |
| D. | None of these |
| Answer» B. Benthons | |
| 45. |
Methods used to get immobilized enzymes: |
| A. | Adsorption |
| B. | Encapsulation |
| C. | Covalent bonding |
| D. | All of these |
| Answer» E. | |
| 46. |
In autoclave, the principle involved is |
| A. | Dry heat |
| B. | Moist heat |
| C. | Steam under pressur |
| D. | Both b and c |
| Answer» E. | |
| 47. |
E.coli produces the following toxins: |
| A. | Enterotoxin |
| B. | Endotoxins |
| C. | Verocytotoxins |
| D. | Hemolysins |
| Answer» C. Verocytotoxins | |
| 48. |
the outstanding example of traditionalmicrobial fermentation product is |
| A. | Vinegar |
| B. | Penicillin |
| C. | Citric acid |
| D. | Tetracyclin |
| Answer» B. Penicillin | |
| 49. |
Basophils have receptors for antibodies |
| A. | IgG |
| B. | IgA |
| C. | IgM |
| D. | IgE |
| Answer» E. | |
| 50. |
The bacterial cells are at their metabolicpeak during |
| A. | Lag phase |
| B. | Log |
| C. | Stationary |
| D. | Decline |
| Answer» C. Stationary | |