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. |
Protoplasts can be prepared from |
| A. | Gram positive bacteria |
| B. | Gram negative bacteria |
| C. | Both a & b |
| D. | None of these |
| Answer» C. Both a & b | |
| 2. |
Rancidity of stored foods is due to theactivity of |
| A. | Toxigenic microbes |
| B. | Proteolytic microbes |
| C. | Saccharolytic microbes |
| D. | Lipolytic microbes |
| Answer» E. | |
| 3. |
What is the function of bacterial capsule? |
| A. | Production of organism from phagocytosis |
| B. | Helps in adherence of bacteria to surface in its environment |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 4. |
Endospores can be stained with |
| A. | Safranine |
| B. | Crystal violet |
| C. | Methylene blue |
| D. | Malachite green |
| Answer» E. | |
| 5. |
Genomic DNA is extracted, broken into fragments of reasonable size by a restriction endonuclease and then inserted into a cloning vector to generate chimeric vectors. The cloned fragments are called |
| A. | Clone |
| B. | Genomic library |
| C. | mRNA |
| D. | None of these |
| Answer» C. mRNA | |
| 6. |
Double standard RNA is seen in |
| A. | Reo viru |
| B. | Rhabdo virus |
| C. | Parvo virus |
| D. | Retro virus |
| Answer» B. Rhabdo virus | |
| 7. |
Centromere is that part of chromosome where |
| A. | Nucleoli are formed |
| B. | Crossing over takes places |
| C. | Chromatids are attached |
| D. | Naking occurs |
| Answer» D. Naking occurs | |
| 8. |
Pigment bearing structure of bacteria are |
| A. | Mesosome |
| B. | Plasmids |
| C. | Mitochondria |
| D. | Chromophores |
| Answer» E. | |
| 9. |
The agglutinin test is used for _______ |
| A. | Identification of isolated bacteria |
| B. | Typing of bacterial species |
| C. | Study of antigenic structure of bacteria |
| D. | All of these |
| Answer» E. | |
| 10. |
Non-cyclic photophosphorylation is alsoknown as |
| A. | Oxygenic photosynthesis |
| B. | Photosynthesis |
| C. | Anoxygenic photosynthesis |
| D. | Photophosphorylation |
| Answer» C. Anoxygenic photosynthesis | |
| 11. |
Serum sickness reaction was discoveredby |
| A. | Marrice Arthu |
| B. | Von perquit |
| C. | Richet |
| D. | Porter |
| Answer» C. Richet | |
| 12. |
Erythromycin inhibits protein synthesis by |
| A. | Attaching to 30 S ribosome unit |
| B. | Attaching to 50 S unit or ribosome |
| C. | By the attachment to t-RNA |
| D. | By the attachment to m-RNA |
| Answer» C. By the attachment to t-RNA | |
| 13. |
Peptone water medium is an example for |
| A. | Synthetic medium |
| B. | Semisynthetic medium |
| C. | Differential medium |
| D. | None of these |
| Answer» C. Differential medium | |
| 14. |
Nitrites are oxidized to nitrates by amicroorganism |
| A. | Nitrosomona |
| B. | Nitrosococcus |
| C. | Nitrobacter |
| D. | Azatobacter |
| Answer» D. Azatobacter | |
| 15. |
In a fluorescent microscope the objectivelens is made of |
| A. | Glas |
| B. | Quartz |
| C. | Polythene |
| D. | None of these |
| Answer» D. None of these | |
| 16. |
The drug of choice in anaphylactic shockis |
| A. | Histamine |
| B. | Corticosteroid |
| C. | Epinephrine |
| D. | None of these |
| Answer» D. None of these | |
| 17. |
The inorganic forms of nitrogen, whichare accepted by bacteria are |
| A. | Nitrate |
| B. | Nitrites |
| C. | Ammonium salts |
| D. | All of these |
| Answer» E. | |
| 18. |
Negative Mantoux test is important in |
| A. | Pulmonary Koch’s syndrome |
| B. | Sarcoidosis |
| C. | Carcinoma bronchus |
| D. | Lymphoma |
| Answer» B. Sarcoidosis | |
| 19. |
The fungal disease that affect the internal organs and spread through the body are called |
| A. | Mycose |
| B. | Systemic mycoses |
| C. | Mycotoxicosis |
| D. | Superficial mycoses |
| Answer» C. Mycotoxicosis | |
| 20. |
The cell donating DNA during transformation is |
| A. | Endogenate |
| B. | Exogenate |
| C. | Mesozygote |
| D. | Merosite |
| Answer» C. Mesozygote | |
| 21. |
Neisseria gonorrhoeae was first described by |
| A. | Neisser in 1879 |
| B. | Pasteur in 1878 |
| C. | Robert Koch |
| D. | None of these |
| Answer» C. Robert Koch | |
| 22. |
Protein particles which can infect arecalled |
| A. | Viron |
| B. | Prions |
| C. | Nucleoida |
| D. | None of these |
| Answer» C. Nucleoida | |
| 23. |
Mycobacteria are stained with |
| A. | Gram’s staining |
| B. | Simple staining |
| C. | Both a and b |
| D. | Ziehl – Neelsen’s staining |
| Answer» E. | |
| 24. |
All of the following drugs act on cellmembrane, except |
| A. | Novobiocin |
| B. | Nystatin |
| C. | Chloromycetin |
| D. | Colicins |
| Answer» E. | |
| 25. |
A facultative anaerobic is |
| A. | Only grow anaerobically |
| B. | Only grow in the presence of O2 |
| C. | Ordinarily an anaerobe but can grow with O2 |
| D. | Ordinarily an aerobe but can grow in absence of O2 |
| Answer» E. | |
| 26. |
If more than one stain is used, suchstaining is called |
| A. | Simple staining |
| B. | Negative staining |
| C. | Differential staining |
| D. | None of these |
| Answer» D. None of these | |
| 27. |
Acquired immunity can be developed by |
| A. | Natural mean |
| B. | Artificial means |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 28. |
The incubation period of diphtheriae is |
| A. | Upto 2 week |
| B. | Upto 1 week |
| C. | 2–4 weeks |
| D. | None of these |
| Answer» D. None of these | |
| 29. |
Conjunctivitis in a new born is caused by |
| A. | Streptococcu |
| B. | Pneumococcus |
| C. | Meningococci |
| D. | None of these |
| Answer» B. Pneumococcus | |
| 30. |
The two strands of DNA are joined noncovalently by |
| A. | Ionic bonds |
| B. | Covalent bonds |
| C. | Hydrogen bonds between bases |
| D. | Polar charges |
| Answer» D. Polar charges | |
| 31. |
Carcinoma refers to |
| A. | Malignant tumours of the connective tissue |
| B. | Malignant tumors of the skin or mucous membrane |
| C. | Malignant tumours of the colon |
| D. | Malignant tumors of the connective tissue |
| Answer» E. | |
| 32. |
Which of the following is pathogenic to humans? |
| A. | Spirogyra |
| B. | Cephaleuros |
| C. | Prototheca |
| D. | Both b and c |
| Answer» D. Both b and c | |
| 33. |
The smallest unit of genetic material that can undergo mutation is called |
| A. | Gene |
| B. | Cistron |
| C. | Replicon |
| D. | Muton |
| Answer» E. | |
| 34. |
The parts which filter lymph are |
| A. | Lymph node |
| B. | Spleen |
| C. | Thymus |
| D. | Bone marrow |
| Answer» B. Spleen | |
| 35. |
Griseofluvin is obtained from |
| A. | Penicillium notatum |
| B. | Streptomyces griseus |
| C. | Penicillium griseofluvin |
| D. | None of these |
| Answer» D. None of these | |
| 36. |
Virulent factor in pneumococcus is |
| A. | Cell wall |
| B. | Capsule |
| C. | Mesosomes |
| D. | Emdotoxins |
| Answer» E. | |
| 37. |
L – forms are discovered by |
| A. | Klein Berger |
| B. | Louis Pasteur |
| C. | Robert Koch |
| D. | Antony von Leeuwenhock |
| Answer» B. Louis Pasteur | |
| 38. |
Maximum application of animal cell culture technology today is in the production of |
| A. | Insulin |
| B. | Interferons |
| C. | Vaccines |
| D. | Edible proteins |
| Answer» D. Edible proteins | |
| 39. |
Erythrocytes will get its ATP energy only by |
| A. | Glycolysi |
| B. | Kreb’s cycle |
| C. | Electron Transport |
| D. | HMP shunt |
| Answer» B. Kreb’s cycle | |
| 40. |
Passive immunity lasts for the period ofabout |
| A. | 10 days |
| B. | 2 – 3 months |
| C. | 10 years |
| D. | None of the above |
| Answer» B. 2 – 3 months | |
| 41. |
DNA replicates during |
| A. | G1 – phase |
| B. | S – phase |
| C. | G2 – phase |
| D. | M – phase |
| Answer» C. G2 – phase | |
| 42. |
The no. of hydrogen bonds existingbetween Guanine and Cytosine are |
| A. | 5 |
| B. | 2 |
| C. | 3 |
| D. | None of these |
| Answer» D. None of these | |
| 43. |
Intradermal test employed for diagnosisof LGV is |
| A. | Frei test |
| B. | Mantoux test |
| C. | Schick test |
| D. | Dick test |
| Answer» B. Mantoux test | |
| 44. |
Different methods of strain improvementare |
| A. | Protoplast fusion |
| B. | Recombinant DNA technique |
| C. | Genetic recombination |
| D. | All of these |
| Answer» E. | |
| 45. |
Mumps virus is belonging go |
| A. | Retroviriae |
| B. | Paramyxoviriae |
| C. | Orthomyxo viridae |
| D. | None of these |
| Answer» C. Orthomyxo viridae | |
| 46. |
The fungus used in the industrial production of citric acid: |
| A. | Rhizopus Oryzac |
| B. | Fusarium moniliformae |
| C. | Rhizopus nigricans |
| D. | Aspergillus nigricans |
| Answer» E. | |
| 47. |
Immediate type of hypersensitivityreactions are mediated by |
| A. | T-cell |
| B. | β-cells |
| C. | Mast cells |
| D. | Macrophages |
| Answer» C. Mast cells | |
| 48. |
Who perfected a magnetic lens in 1927 |
| A. | Gabor |
| B. | Broglie |
| C. | Busch |
| D. | None of these |
| Answer» B. Broglie | |
| 49. |
Griffith (1928) reported the phenomenonof transformation first in |
| A. | H. influenzae |
| B. | Bacillus species |
| C. | Pneumococci |
| D. | E.coli |
| Answer» D. E.coli | |
| 50. |
The total no. of genes in the group ofsame individuals is |
| A. | Genome |
| B. | Gene map |
| C. | Gene pool |
| D. | None of these |
| Answer» D. None of these | |