All of the following lab tests can be used to distinguish streptococcus mutans from other oral streptococci, except______________?

Related Mcqs:

1. Streptococcus mutans is considered to be principle etiologic agent of caries because it produces organic acids and it ________________?

   A. Forms a gelatinous matrix
   B. Metabolizes substrate from saliva
   C. Derives energy from enamel constituents
   D. Lives symbiolically with lactobacillus

2. The enzyme glucosyl transferase secreted by Streptococcus mutans sythesizes glucans from_____________?

   A. Glucose
   B. Fructose
   C. Sucrose
   D. Lactose

3. Initiation of caries by streptococcus mutans is by the production of______________?

   A. Dextranase and soluble dextran
   B. Insoluble dextan and glucosyl transferase
   C. soluble dextan and glucosyl transferase
   D. None of the above

4. Most used selective medium for streptococcus mutans is:____________?

   A. Mac conkey medium
   B. Mitus salivarius bacitracin agar
   C. Nutrient agar
   D. Tellurite medium

5. Streptococcus mutans produces an adhesive polymer from sucrose, known as:__________?

   A. Levans
   B. Lectins
   C. Glucans
   D. Polyfructans

6. Transmission of all of the following intestinal parasites takes place by the feco-oral route except______________?

   A. Giardia lambia
   B. Ascaris lumbriocoides
   C. Strongyloides
   D. Entamoeba

7. cAMP reaction is shown by which streptococci ?

   A. Group A
   B. Group B
   C. Group C
   D. Group D

8. A patient on warfarin sodium following myocardial infarction reports for an oral surgical procedure which one of the following laboratory tests should be preferred to ascertain the fitness_______________?

   A. Prothrombin time
   B. Tourniquet time
   C. Clotting time
   D. Bleeding time

9. All of the following are true of streptococcus except_____________?

   A. It’s group of lactic acid production bacteria
   B. Shows adherence to dental enamel
   C. Most common in humans
   D. Most common is animals

10. Oral lesions of secondary syphilis includes all EXCEPT______________?

    A. snail track ulcers
    B. Mucous patches
    C. chancre of tongue
    D. Hutchinson’s wart