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 - B
III. Multiple Choice Questions:
1. The term "bactericidal" refers to:
A) Inhibition of bacterial growth B) Killing of bacteria
C) Reduction in bacterial virulence D) Stimulation of bacterial replication
A) Psychrophiles B) Mesophiles C) Thermophiles D) Halophiles
3. 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
A) Activation of B cells B) Cytokine production
C) Suppression of the immune response D) Phagocytosis
5. The phenomenon of 'immune surveillance' is primarily associated with:
A) Detection of pathogens B) Detection of cancer cells
6. Which of the following statements about interferons is true?
A) They activate B cells
B) They are involved in allergic responses
C) They have antiviral properties
7. All of the above can be given for the Treatment of MRSA, Except
A) Vancomycin B) Linezolid C) Cotrimoxazole D) Meropenem
8. The toxin produced by Clostridium perfringens that causes muscle necrosis is:
A) Tetanospasmin B) Alpha toxin C) Botulinum toxin D) Exotoxin A
A) Trichophyton rubrum B) Trichophyton tonsurans
C) Microsporum canis D) Epidermophyton floccosum
... 2 ...
... 2 ...
A) Trichosporon species B) Piedraia hortae
C) Malassezia furfur D) Candida albicans
11. Which stain is used for visualizing fungi in tissue samples?
A) Gram stain B) Giemsa stain
12. Dermatophytes invade which layer of the skin?
A) Subcutaneous tissue B) Epidermis C) Dermis D) Hypodermis
13. Which of the following is a non-enveloped virus?
A) Hepatitis C virus B) Influenza virus
14. Hospital-acquired infections are defined as infections:
A) Present at the time of hospital admission
B) Acquired 48 hours or more after hospital admission
C) Acquired from food consumed in the hospital
15. Which of the following strategies can reduce the risk of catheter-associated
bloodstream infections (CABIs)?
A) Frequent use of antibiotics
B) Changing catheters every few days unnecessarily
D) Reusing catheters
16. A positive Tuberculin test is an example of
A) Type I Hypersensitivity B) Type II Hypersensitivity
C) Type III Hypersensitivity D) Type IV Hypersensitivity
A) Weil Felix test B) Paul Bunnel Test C) Cold agglutinin Test D) VDRL test
18. Endoscopes are sterilized by
A) Glutaraldehyde B) Formaldehyde C) Autoclaving D) Hot air oven
19. The process by which bacteria exchange genetic material via a pilus is called:
20. Which of the following bacterial components is responsible for the formation of
biofilms?
A) Cell wall B) Capsule C) Plasmid D) Flagella
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[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 - B
III. Multiple Choice Questions:
--- Content provided by FirstRanker.com ---
(20 x 1 = 20)1. The term "bactericidal" refers to:
A) Inhibition of bacterial growth B) Killing of bacteria
C) Reduction in bacterial virulence D) Stimulation of bacterial replication
--- Content provided by FirstRanker.com ---
2. Bacteria that can grow at temperatures between 45?C and 80?C are called:A) Psychrophiles B) Mesophiles C) Thermophiles D) Halophiles
3. 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 ---
4. 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
5. The phenomenon of 'immune surveillance' is primarily associated with:
A) Detection of pathogens B) Detection of cancer cells
--- Content provided by FirstRanker.com ---
C) Detection of allergens D) Detection of self-antigens6. Which of the following statements about interferons is true?
A) They activate B cells
B) They are involved in allergic responses
C) They have antiviral properties
--- Content provided by FirstRanker.com ---
D) They are components of the complement system7. All of the above can be given for the Treatment of MRSA, Except
A) Vancomycin B) Linezolid C) Cotrimoxazole D) Meropenem
8. The toxin produced by Clostridium perfringens that causes muscle necrosis is:
A) Tetanospasmin B) Alpha toxin C) Botulinum toxin D) Exotoxin A
--- Content provided by FirstRanker.com ---
9. Which of the following is the most common cause of Tinea capitis?A) Trichophyton rubrum B) Trichophyton tonsurans
C) Microsporum canis D) Epidermophyton floccosum
... 2 ...
... 2 ...
--- Content provided by FirstRanker.com ---
10. Black Piedra is caused by:A) Trichosporon species B) Piedraia hortae
C) Malassezia furfur D) Candida albicans
11. 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 stain12. Dermatophytes invade which layer of the skin?
A) Subcutaneous tissue B) Epidermis C) Dermis D) Hypodermis
13. Which of the following is a non-enveloped virus?
A) Hepatitis C virus B) Influenza virus
--- Content provided by FirstRanker.com ---
C) Human Papillomavirus (HPV) D) Herpes Simplex Virus14. Hospital-acquired infections are defined as infections:
A) Present at the time of hospital admission
B) Acquired 48 hours or more after hospital admission
C) Acquired from food consumed in the hospital
--- Content provided by FirstRanker.com ---
D) Transmitted through blood transfusions only15. Which of the following strategies can reduce the risk of catheter-associated
bloodstream infections (CABIs)?
A) Frequent use of antibiotics
B) Changing catheters every few days unnecessarily
--- Content provided by FirstRanker.com ---
C) Using aseptic technique during catheter insertionD) Reusing catheters
16. A positive Tuberculin test is an example of
A) Type I Hypersensitivity B) Type II Hypersensitivity
C) Type III Hypersensitivity D) Type IV Hypersensitivity
--- Content provided by FirstRanker.com ---
17. All are Heterophile Agglutination Test, ExceptA) Weil Felix test B) Paul Bunnel Test C) Cold agglutinin Test D) VDRL test
18. Endoscopes are sterilized by
A) Glutaraldehyde B) Formaldehyde C) Autoclaving D) Hot air oven
19. The process by which bacteria exchange genetic material via a pilus is called:
--- Content provided by FirstRanker.com ---
A) Transformation B) Transduction C) Conjugation D) Binary fission20. Which of the following bacterial components is responsible for the formation of
biofilms?
A) Cell wall B) Capsule C) Plasmid D) Flagella
*********
--- Content provided by FirstRanker.com ---
[MBBS 0325]