A. Gram staining
B. Fermentation of mannitol and sorbital
C. Production of intracellular and extracellular adherent polysacharide
D. Colony morphology on saliva agar
Related Mcqs:
- 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 - The enzyme glucosyl transferase secreted by Streptococcus mutans sythesizes glucans from_____________?
A. Glucose
B. Fructose
C. Sucrose
D. Lactose - 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 - Most used selective medium for streptococcus mutans is:____________?
A. Mac conkey medium
B. Mitus salivarius bacitracin agar
C. Nutrient agar
D. Tellurite medium - Streptococcus mutans produces an adhesive polymer from sucrose, known as:__________?
A. Levans
B. Lectins
C. Glucans
D. Polyfructans - 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 - cAMP reaction is shown by which streptococci ?
A. Group A
B. Group B
C. Group C
D. Group D - 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 - 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 - Oral lesions of secondary syphilis includes all EXCEPT______________?
A. snail track ulcers
B. Mucous patches
C. chancre of tongue
D. Hutchinson’s wart
