A. Outer membrane proteins
B. IgA Protease
C. M-Proteins
D. Pili
✅ The correct answer is option M-Proteins.
Microbiology MCQs
332. Blood agar is________________?
A. Simple media
B. Transport media
C. Enriched media
D. Differential media
✅ The correct answer is option Enriched media.
333. Following reaction are produced by heterophil antigens except_____________?
A. Forssman antigen antibody reaction
B. Weil-Felix reaction
C. Paul bunnel reaction
D. Widal reaction
✅ The correct answer is option Widal reaction.
334. Which of the following is most potent antigen for stimulating both humoral and cell mediated immunity ?
A. Adjuvant
B. Proteins
C. Polysaccharides
D. Lipids
✅ The correct answer is option Proteins.
335. Plaque test is used routinely in virology lab’s for________________?
A. Identification of viral disease
B. To separate specific clone of virus
C. To maintain certain viral culture
D. To prepare vaccines
✅ The correct answer is option Identification of viral disease.
336. Disinfection frees the surface from______________?
A. Vegetative forms
B. Spore forms
C. Both of the above
D. None of the above
✅ The correct answer is option Vegetative forms.
337. Anaerobic bacteria can be cultured in__________________?
A. L-J medium
B. Robertson cooked meat medium
C. Loefflers medium
D. Sabourauds agar
✅ The correct answer is option Robertson cooked meat medium.
338. Following hepatitis B infection through blood transfusion disease manifests in_____________?
A. 1 week
B. 6 week
C. 3 months
D. 6 months
✅ The correct answer is option 1 week.
339. Silver impregnation method of staining is useful to demonstrate_____________?
A. Bacterial flagella
B. Spirochetes
C. Both of the above
D. None of the above
✅ The correct answer is option Both of the above.
340. Following are the characteristics of Vincent’s angina EXCEPT_______________?
A. Ulcerative gingivostomatitis
B. Caused due to malnutrition
C. A symbiotic infection
D. Caused by leptospira interrogans
✅ The correct answer is option Caused by leptospira interrogans.