Download MBBS 2nd Year MCQs 2023 July 526065 Microbiology I Previous Question Paper

Download A Bachelor of Medicine, Bachelor of Surgery (MBBS) 2nd Year (Second Year) 2023 July MCQs 526065 Microbiology I Previous Question Paper || MGR MBBS 2023 july 2nd year question papers

[MBBS 0723] JULY 2023 Sub. Code :6065


(For the candidates admitted from the Academic Year 2019-2020)



Q.P. Code: 526065

Time: 30 Minutes

Maximum : 20 Marks

Answer All Questions

Choose one correct answer in the box provided in the Answer Script.
No overwriting should be done. Choice should be given in Capital Letters.

III. Multiple Choice Questions:

(20 x 1 = 20)

1. Which is used in digestion and decontamination of sputum in smear preparation


B) KOH C) NaCl D) N-acetyl-cysteine

2. The process of destroying all microbes including spores is called

A) Disinfection B) Antisepsis C) Disinfestation D) Sterilization

3. All are true about bacteriophage except

A) Can transmit toxin to bacteria
B) Bacteria which transmits DNA to another bacteria
C) Causes transformation of bacteria
D) Is a virus which invades bacteria

4. Jumping genes is

A) Transposon B) Episome C) Cosmid

D) Plasmid

5. Toxic shock syndrome is due to

A) Septic abortion B) Forgotton tampons
C) IUCD D) Pelvic examination

6. The commonest organism causing cellulitis is

A) Streptococcus pyogenes B) Streptococcus faecalis
C) Streptococcus viridans

D) Treponema pallidum

7. Boxcar appearance is seen in

A) Clostridium perfringens B) Streptococci

C) Toxoplasma D) Treponema pallidum

8. Which of the following is the most predominant constituent of sulphur granules of


A) Organisms

B) Neutrophils and monocytes

C) Monocytes and lymphocytes D) Eosinophil

9. A person 6 hour after consuming rice pudding in restaurant develops vomiting.

True statement regarding food poisoning
A) Caused by Staphylococcus aureus B) Preformed toxin
C) Caused by Vibrio parahaemolyticus D) Heat labile toxin

... 2 ...

... 2 ...

10. The causative agent of Favus is

A) Microsporum audonii

B) Microsporum canis

C) Trichophyton mentagrophyte D) Trichophyton schoenleinii

11. Which complement component is involved in both classical and alternate pathway?

A) C1 B) C2 c) C3 d) All

12. DiGeorge syndrome is characterized by all except

A) Congenital thymic hypoplasia
B) Abnormal development of third and fourth pouches
C) Hypothyroidism
D) Hypocalcemic tetany

13. Which is not a heterophile agglutination test?

A) Weil-Felix test B) Widal test C) Paul-Bunnel test D) Streptococcus MG

14. Disorders of Phagocytosis are all, except

A) Job's syndrome B) Chediak-Higashi syndrome
C) Myeloperoxidase deficiency D) Wiskott-Aldrich syndrome

15. A male patient presented with granulomatous penile ulce On Wright Geimsa stain tiny

organisms of 2 microns within macrophages seen. What is the causative organisms?


B) Calymmatobacterium granulomatis

C) Neisseria D) Staphylococcus aureus

16. A patient with history of discharge from right ear for past 1 year presented with severe

ear ache. The discharge was cultured and the organism was found to be gram positive
cocci. The least likely cause is

A) Pseudomonas B) Streptococcus pneumonia
C) Staphylococcus D) Haemophilus influenza

17. With reference to antibiotic resistance, all the following statements are true except

A) The most common mechanism is production of neutralizing enzymes by bacteria
B) Plasmid mediated resistance is exclusively transferred vertically
C) Complete elimination of target is the mechanism by which enterococci develop
resistance to vancomycin
D) Alteration of target lesions leads to development of resistance in pneumococci

18. Real time PCR is used for

A) Multiplication of RNA B) Multiplication of specific segment of DNA
C) Multiplication of Proteins D) To know how much amplification of DNA has occured

19. Swarming growth on culture is characteristic of which Gram-negative organism

A) Clostridium Welchii B) Clostridium tetani
C) Bacillus cereus D) Proteus mirabilis

20. True about Madura foot?

A) Can erode bones B) Spread to lymph nodes

C) Most commonly occur in hand D) Antibiotic has no role.


[MBBS 0723]

This post was last modified on 18 November 2023