Streptococcus Multiple Choice Questions
1. The bacteria involved in the production of dental caries is/are
A. Streptococcus mutans
B. S sanguis
C. Both (A) and (B)
D. Streptococcus pyogenes
Answer: C
2. 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: B
3. Which of the following condition is non-suppurative sequelae of Streptococcus pyogenesinfections?
A. Acute rheumatic fever
B. Acute glomerulonephritis
C. Erythema nodosum
D. All of these
Answer: D
5. 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: A
6. Streptolysin O is
A. antigenic
B. oxygen-labile
C. heat-labile
D. all of these
Answer: D
STREPTOCOCCUS Objective type Questions with Answers
7. Cell wall protein of Streptococcus pyogenes crossreacts with human
A. synovial fluid
B. cardiac valves
C. myocardium
D. vascular intima
Answer: C
8. Individuals suffering from primary atypical pneumonia have agglutinins to
A. Streptococcus MG
B. S avium
C. S mutans
D. Enterococcus faecalis
Answer: A
9. 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: D
10. The bacterial sore throat is caused by
A. Staphylococcus aureus
B. Haemophilus spp
C. Streptococcus pyogenes
D. Mycoplasma pneumoniae
Answer: C
11. Crystal violet blood agar is a selective medium for
A. ß-haemolytic streptococci
B. Staphylococcus aureus
C. Corynebacterium diphtheriae
D. Mycobacterium tuberculosis
Answer: A