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

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

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

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

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

4. 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

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

   A. Gram staining
   B. Fermentation of mannitol and sorbital
   C. Production of intracellular and extracellular adherent polysacharide
   D. Colony morphology on saliva agar

6. S. mutans is involved in dental caries initiation Other bacteria also involved is______________?

   A. S. Sarcinus
   B. S. macae
   C. S. sanguis
   D. S. salivarius

7. Which of the following represents soluble polysaccharide found in dental plaque and is formed from the fructose moiety of sucrose?

   A. Levan
   B. Dextran
   C. Amlyopecting
   D. Hyaluronic acid

8. The extra – cellular polysaccharide sythesized by cariogenic streptococci in the presence of excess sucrose are best described as_______________?

   A. Mucopolysaccharide
   B. Dextran-like glucan
   C. Glycogen – like glucan
   D. Amylopectin

9. The transmembrane adhesive molecules present in hemi desmosomes which specifically binds to basal lamina glycoprotein laminin are______________?

   A. Integrin a6-B4
   B. The catenins desmoplakin
   C. cadherins desmoglein
   D. a and B catenin

10. Which is the cement with adhesive properties ?

    A. Zinc oxide eugenol
    B. Zinc polycarboxylate
    C. SIlicate
    D. Glass ionomer
    E. Both B & D