MEDICAL
[MBBS 0325] MARCH 2025 Sub. Code :6065
M.B.B.S. DEGREE EXAMINATIONS
(For the candidates admitted from the Academic Year 2019-2020)
SECOND PROFESSIONAL ? SUPPLEMENTARY - (CBME)
PAPER I ? MICROBIOLOGY
Q.P. Code: 526065
Maximum : 20 Marks
Answer All Questions
SET - C
III. Multiple Choice Questions:
1. What is the role of regulatory T cells (Tregs)?
A) Activation of B cells B) Cytokine production
C) Suppression of the immune response D) Phagocytosis
A) Detection of pathogens B) Detection of cancer cells
C) Detection of allergens D) Detection of self-antigens
3. Which of the following statements about interferons is true?
A) They activate B cells
C) They have antiviral properties
D) They are components of the complement system
4. All of the above can be given for the Treatment of MRSA, Except
A) Vancomycin B) Linezolid C) Cotrimoxazole D) Meropenem
A) Tetanospasmin B) Alpha toxin C) Botulinum toxin D) Exotoxin A
6. Which of the following is the most common cause of Tinea capitis?
A) Trichophyton rubrum B) Trichophyton tonsurans
C) Microsporum canis D) Epidermophyton floccosum
A) Trichosporon species B) Piedraia hortae
C) Malassezia furfur D) Candida albicans
8. Which stain is used for visualizing fungi in tissue samples?
A) Gram stain B) Giemsa stain
... 2 ...
... 2 ...
9. Dermatophytes invade which layer of the skin?
A) Subcutaneous tissue B) Epidermis C) Dermis D) Hypodermis
A) Hepatitis C virus B) Influenza virus
C) Human Papillomavirus (HPV) D) Herpes Simplex Virus
11. Hospital-acquired infections are defined as infections:
A) Present at the time of hospital admission
C) Acquired from food consumed in the hospital
D) Transmitted through blood transfusions only
12. Which of the following strategies can reduce the risk of catheter-associated
bloodstream infections (CABIs)?
B) Changing catheters every few days unnecessarily
C) Using aseptic technique during catheter insertion
D) Reusing catheters
13. A positive Tuberculin test is an example of
C) Type III Hypersensitivity D) Type IV Hypersensitivity
14. All are Heterophile Agglutination Test, Except
A) Weil Felix test B) Paul Bunnel Test C) Cold agglutinin Test D) VDRL test
15. Endoscopes are sterilized by
16. The process by which bacteria exchange genetic material via a pilus is called:
A) Transformation B) Transduction C) Conjugation D) Binary fission
17. Which of the following bacterial components is responsible for the formation of
biofilms?
18. The term "bactericidal" refers to:
A) Inhibition of bacterial growth B) Killing of bacteria
C) Reduction in bacterial virulence D) Stimulation of bacterial replication
19. Bacteria that can grow at temperatures between 45?C and 80?C are called:
20. Which cytokine is primarily responsible for the differentiation of naive T cells into
Th1 cells?
A) IL-4 B) IL-6 C) IL-12 D) IL-10
*********
[MBBS 0325] MARCH 2025 Sub. Code :6065
M.B.B.S. DEGREE EXAMINATIONS
(For the candidates admitted from the Academic Year 2019-2020)
--- Content provided by FirstRanker.com ---
SECOND PROFESSIONAL ? SUPPLEMENTARY - (CBME)
PAPER I ? MICROBIOLOGY
Q.P. Code: 526065
--- Content provided by FirstRanker.com ---
Time: 20 MinutesMaximum : 20 Marks
Answer All Questions
--- Content provided by FirstRanker.com ---
Shade the correct answer with Black of Blue ink ball point penSET - C
III. Multiple Choice Questions:
--- Content provided by FirstRanker.com ---
(20 x 1 = 20)1. What is the role of regulatory T cells (Tregs)?
A) Activation of B cells B) Cytokine production
C) Suppression of the immune response D) Phagocytosis
--- Content provided by FirstRanker.com ---
2. The phenomenon of 'immune surveillance' is primarily associated with:A) Detection of pathogens B) Detection of cancer cells
C) Detection of allergens D) Detection of self-antigens
3. Which of the following statements about interferons is true?
A) They activate B cells
--- Content provided by FirstRanker.com ---
B) They are involved in allergic responsesC) They have antiviral properties
D) They are components of the complement system
4. All of the above can be given for the Treatment of MRSA, Except
A) Vancomycin B) Linezolid C) Cotrimoxazole D) Meropenem
--- Content provided by FirstRanker.com ---
5. The toxin produced by Clostridium perfringens that causes muscle necrosis is:A) Tetanospasmin B) Alpha toxin C) Botulinum toxin D) Exotoxin A
6. Which of the following is the most common cause of Tinea capitis?
A) Trichophyton rubrum B) Trichophyton tonsurans
C) Microsporum canis D) Epidermophyton floccosum
--- Content provided by FirstRanker.com ---
7. Black Piedra is caused by:A) Trichosporon species B) Piedraia hortae
C) Malassezia furfur D) Candida albicans
8. Which stain is used for visualizing fungi in tissue samples?
A) Gram stain B) Giemsa stain
--- Content provided by FirstRanker.com ---
C) Periodic acid-Schiff (PAS) stain D) Wright's stain... 2 ...
... 2 ...
9. Dermatophytes invade which layer of the skin?
A) Subcutaneous tissue B) Epidermis C) Dermis D) Hypodermis
--- Content provided by FirstRanker.com ---
10. Which of the following is a non-enveloped virus?A) Hepatitis C virus B) Influenza virus
C) Human Papillomavirus (HPV) D) Herpes Simplex Virus
11. Hospital-acquired infections are defined as infections:
A) Present at the time of hospital admission
--- Content provided by FirstRanker.com ---
B) Acquired 48 hours or more after hospital admissionC) Acquired from food consumed in the hospital
D) Transmitted through blood transfusions only
12. Which of the following strategies can reduce the risk of catheter-associated
bloodstream infections (CABIs)?
--- Content provided by FirstRanker.com ---
A) Frequent use of antibioticsB) Changing catheters every few days unnecessarily
C) Using aseptic technique during catheter insertion
D) Reusing catheters
13. A positive Tuberculin test is an example of
--- Content provided by FirstRanker.com ---
A) Type I Hypersensitivity B) Type II HypersensitivityC) Type III Hypersensitivity D) Type IV Hypersensitivity
14. All are Heterophile Agglutination Test, Except
A) Weil Felix test B) Paul Bunnel Test C) Cold agglutinin Test D) VDRL test
15. Endoscopes are sterilized by
--- Content provided by FirstRanker.com ---
A) Glutaraldehyde B) Formaldehyde C) Autoclaving D) Hot air oven16. The process by which bacteria exchange genetic material via a pilus is called:
A) Transformation B) Transduction C) Conjugation D) Binary fission
17. Which of the following bacterial components is responsible for the formation of
biofilms?
--- Content provided by FirstRanker.com ---
A) Cell wall B) Capsule C) Plasmid D) Flagella18. The term "bactericidal" refers to:
A) Inhibition of bacterial growth B) Killing of bacteria
C) Reduction in bacterial virulence D) Stimulation of bacterial replication
19. Bacteria that can grow at temperatures between 45?C and 80?C are called:
--- Content provided by FirstRanker.com ---
A) Psychrophiles B) Mesophiles C) Thermophiles D) Halophiles20. Which cytokine is primarily responsible for the differentiation of naive T cells into
Th1 cells?
A) IL-4 B) IL-6 C) IL-12 D) IL-10
*********
--- Content provided by FirstRanker.com ---
[MBBS 0325]