 
			 
			MCQOPTIONS
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				This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. | Which of the following cross-reacts with cell wall carbohydrate of ? | 
| A. | Cardiac valves | 
| B. | Synovial fluid | 
| C. | Myocardium | 
| D. | Vascular intima | 
| Answer» B. Synovial fluid | |
| 2. | can be differentiated from other haemolytic on the basis of | 
| A. | Bacitracin sensitivity | 
| B. | Erythromycin sensitivity | 
| C. | Aminoglycosides sensitivity | 
| D. | Penicillin sensitivity | 
| Answer» B. Erythromycin sensitivity | |
| 3. | Cell wall protein of with human | 
| A. | synovial fluid | 
| B. | cardiac valves | 
| C. | myocardium | 
| D. | vascular intima | 
| Answer» D. vascular intima | |
| 4. | Which of the following condition is non-suppurative sequelae of infections? | 
| A. | Acute rheumatic fever | 
| B. | Acute glomerulonephritis | 
| C. | Erythema nodosum | 
| D. | All of these | 
| Answer» E. | |
| 5. | Crystal violet blood agar is a selective medium for | 
| A. | <i> -haemolytic</i> | 
| B. | streptococci | 
| C. | <i>Staphylococcus aureus</i> | 
| D. | <i>Corynebacterium diphtheriae</i> | 
| E. | <i>Mycobacterium tuberculosis</i> | 
| Answer» B. streptococci | |
| 6. | Streptolysin O is | 
| A. | antigenic | 
| B. | oxygen-labile | 
| C. | heat-labile | 
| D. | all of these | 
| Answer» E. | |
| 7. | Individuals suffering from primary atypical pneumonia have agglutinins to | 
| A. | <i>Streptococcus MG </i> | 
| B. | <i> S avium</i> | 
| C. | <i>S mutans</i> | 
| D. | <i>Enterococcus faecalis</i> | 
| Answer» B. <i> S avium</i> | |
| 8. | Which of the following test(s) may establish retrospective diagnosis of streptococcal infection? | 
| A. | Anti-DNase B test | 
| B. | ASO test | 
| C. | Streptozyme test | 
| D. | All of these | 
| Answer» E. | |
| 9. | The bacterial sore throat is caused by | 
| A. | <i>Staphylococcus aureus</i> | 
| B. | <i>Haemophilus spp</i> | 
| C. | <i>Streptococcus pyogenes</i> | 
| D. | <i>Mycoplasma pneumoniae</i> | 
| Answer» D. <i>Mycoplasma pneumoniae</i> | |
| 10. | The bacteria involved in the production of dental caries is/are | 
| A. | <i>Streptococcus mutans</i> | 
| B. | <i>S sanguis</i> | 
| C. | Both (a) and (b) | 
| D. | <i>Streptococcus pyogenes</i> | 
| Answer» D. <i>Streptococcus pyogenes</i> | |
| 11. | Which of the following test indicates the susceptibility to streptococcal pyrogenic exotoxin? | 
| A. | Schick test | 
| B. | Disk test | 
| C. | ASO test | 
| D. | Precipitation test | 
| Answer» C. ASO test | |
| 12. | Which of the following cross-reacts with cell wall carbohydrate of Streptococcus pyogenes? | 
| A. | Cardiac valves | 
| B. | Synovial fluid | 
| C. | Myocardium | 
| D. | Vascular intima | 
| Answer» B. Synovial fluid | |
| 13. | Streptococcus pyogenes can be differentiated from other haemolytic Streptococci on the basis of | 
| A. | Bacitracin sensitivity | 
| B. | Erythromycin sensitivity | 
| C. | Aminoglycosides sensitivity | 
| D. | Penicillin sensitivity | 
| Answer» B. Erythromycin sensitivity | |
| 14. | Which of the following condition is non-suppurative sequelae of Streptococcus pyogenes infections? | 
| A. | Acute rheumatic fever | 
| B. | Acute glomerulonephritis | 
| C. | Erythema nodosum | 
| D. | All of these | 
| Answer» E. | |
| 15. | Cell wall protein of Streptococcus pyogenes crossreacts with human | 
| A. | synovial fluid | 
| B. | cardiac valves | 
| C. | myocardium | 
| D. | vascular intima | 
| Answer» D. vascular intima | |