DNB Microbiology And Immunology Solved Model Question Paper 2023

DNB Microbiology And Immunology Model Question Paper 2023

 

Question 1. DNA microarrays allow detection of gene mutations using:

1. Polymerase chain Reaction
2. Cloning
3. Southern blotting
4. Hybridization

Answer. (4) (Hybridization)

Read And Learn More: Micro Biology And Immunology Model Question Papers With Answers

Question 2. Minimum chlorine content of water after chlorination should be:

1. 0.5 mg/L
2. 5 mg/L
3. 0.05 mg/L
4. 50 mg/L

Answer. (1) (0.5 mg/L) and WHO

For normal domestic use, residual chlorine levels at the point where the consumer collects water should be between 0.2 and 0.5 mg/L.

Question 3. Disinfecting action of chlorine is due to:

1. Hypochlorous acid
2. Hypochlorite ion
3. Hydrochloric acid
4. Both Hypochlorous acid and Hypochlorite ion

Answer. (1) (Hypochlorous acid)

Question 4. In monoclonal antibody production, monoclonal cells are differentiated from:

1. Sensitized B cells
2. Sensitized T cells
3. Myeloma cell lines
4. None of these

Answer. (3) (Myeloma cell)

Question 5. Generation time for leprosy bacillus is:

1. 8–10 days
2. 10–12 days
3. 12–15 days
4. 15–20 days

Answer. (3) (12-15 days)

Lepra bacillus has a long generation time of 12–13 days as compared to 14 hours in tubercle bacillus and about 20 minutes for coliform bacilli.

Question 6. Drug not used in the treatment of H.pylori is:

1. Cisapride
2. Clarithromycin
3. Metronidazole
4. Omeprazole

Answer. (1) (Cisapride)

Question 7. Prophylaxis of meningococcal meningitis is:

1. Ciprofloxacin
2. Rifampicin
3. Penicillin
4. Gentamicin

Answer. (2) (Rifampicin)

Question 8. Treatment for clostridial myonercrosis is:

1. Amikacin
2. Pencillin
3. Ampicillin
4. Gentamycin

Answer. (2) (Penicillin)

Question 9. Drug of choice used to treat MRSA is:

1. Metronidazole
2. Vancomycin
3. Imipenem
4. Clindamycin

Answer. (2) (Vancomycin)

Question 10. Which of the following gives positive test with both Weil Felix OX19 and OX2?

1. Spotted fever
2. Scrub typhus
3. Epidemic typhus
4. None of the above

Answer. (1) (Spotted fever)

Question 11. Gonorrhea can be identified by:

1. Growth on MacConkey medium
2. Growth at 37° C
3. By the fermentation of glucose, not maltose
4. Growth in 45% 60% bile

Answer. (3) (Glucose fermentation)

Question 12. All are capsulated except:

1. Klebsiella pneumoniae
2. Hemophilus influenzae
3. Bacillus anthracis
4. Escherichia coli

Answer. (4) (E.coli)

Commonly E.coli is a noncapsulated bacterium; however, some of the strains, those contain capsular antigen (K antigen) possess microcapsules.

Question 13. Which of the following is a strict aerobic bacterium?

1. Staphylococcus aureus
2. E. coli
3. Streptococs pneumoniae
4. Pseudomonas

Answer. (4) (Pseudomonas)

Question 14. Cause of Meliodosis is:

1. Burkholderia mallei
2. Burkholderia pseudomallei
3. Burkholderia cepacia
4. None

Answer. (2) (B. pseudomallei)

Question 15. Most common cause of bacillary angiomatosis is:

1. B. quintana
2. B. bacilliformis
3. B. henslae
4. B. elizabethi

Answer. (1) (B. quintana)

Question 16. Metachromatic granules are seen in:

1. Corynebacterium
2. E.coli
3. Yersinia
4. Pseudomonas

Answer. (1) (Corynebacterium)

Question 17. Most common cause of pyomyositis is:

1. Streptococcus pyogenes
2. Pseudomonas
3. Staphylococcus aureus
4. E. coli

Answer. (3) (Staphylococcus aureus)

S. aureus causes pyomyositis commonly in tropics and among HIV-infected individuals.

Question 18. True about gp. 120 is:

1. Virus attachment
2. Virus penetration
3. Virus detachment
4. Virus dissemination

Answer. (1) (Virus attachment)

Question 19. All are continuous cell line for viruses except:

1. Vero
2. Hep2
3. WI-38
4. Hela

Answer. (3) (WI-38)

WI-38 is human embryonic lung cell line, which is a diploid cell line.

Question 20. Antigenic variation is seen in all except:

1. Influenza type A
2. Influenza type B
3. Influenza type C
4. None of the above

Answer. (3) (Type C)

Question 21. Asteroid bodies are seen in:

1. Sarcoidosis
2. Syphilis
3. Chromoblastomycosis
4. Sporotrichosis

Answer. (4) (Sporotrichosis)

Question 22. All are dimorphic fungi except:

1. Histoplasma
2. Paracoccidiodes
3. Cryptococcus
4. Blastomyces

Answer. (3) (Cryptococcus)

Question 23. Number of nucleus present in mature cyst of E. Histolytica is:

1. 1
2. 2
3. 4
4. 8
5. Escherichia coli

Answer. (3) (4)

Question 24. Which of the following acts as intermediate host of malaria parasite?

1. Culex
2. Female anopheles
3. Thromboculid mite
4. Human

Answer. (d) (Human)

Question 25. Schizonts are not seen in peripheral smear in which type of malaria?

1. P. vivax
2. P. falciparum
3. P. ovale
4. P. malariae

Answer. (2) (P. falciparum)

Question 26. Which of the following parasite causes myocarditis?

1. Trichinella spiralis
2. Trichuris trichiura
3. Ancylostoma duodenale
4. Tinea saginata

Answer. (1) (Trichenella spiralis)

Severe infection with the nematode Trichinella spiralis may cause myocarditis.

Question 27. Which of the following parasite can enter through intact skin?

1. Giardia
2. Whipworm
3. Strongyloides
4. Trichinella

Answer. (3) (Strongyloides)

Question 28. Chagas disease is caused by:

1. Trypanosoma cruzi
2. Trypanosoma gambiense
3. Trypanosoma brucei
4. Leishmania donovani

Answer. (1) (Trypanosoma cruzi)

Question 29. Acute meningoencephalitis is caused by:

1. Acanthamoeba
2. Naegleria
3. Meningococcus
4. Balmuthia

Answer. (2) (Naegleria)

Question 30. Skin test useful in hydatid disease is:

1. Casoni’s test
2. Schick test
3. Patch test
4. Dick’s test

Answer. (1) (Casoni’s test)

Question 31. Plastic cover of syringes is disposed in:

1. Red bag
2. Yellow bag
3. Black bag
4. Blue bag

Answer. (3) (Black bag)

Plastic cover of syringes being non-infectious can be disposed in general waste (black or green, depending upon institutional policy).

Question 32. Which of the following is used as an indicator for recent fecal contamination of water?

1. E. coli
2. Corynebacterium diphtheriae
3. Pseudomonas
4. Streptococci

Answer. (1) (E.coli)

Question 33. Food poisoning in canned food is caused by:

1. Staphylococcus
2. Salmonella
3. Clostridium botulinum
4. Bacillus cereus

Answer. (3) (Clostridium botulinum)

Question 34. Food poisoning that does not presents within 6 hours is due to:

1. Staphylococcus
2. Salmonella
3. Clostridium botulinum
4. Bacillus cereus

Answer. (2) (Salmonella)

Question 35. Atypical pneumonia is caused by all except:

1. Klebsiella
2. Adenovirus
3. Chlamydia
4. Q fever

Answer. (1) (Klebsiella)