(A) Can attack to smooth enamel surfaces
(B) Can produce insoluble extracellular polysaccharides
(C) Are the main causative agent
(D) Are secondary invaders

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

(A) More than the patient with normal salivary flow
(B) unaffected
(C) less than the patient with normal salivary flow
(D) None of the above

(A) Two
(B) One
(C) Four
(D) Five

(A) Proteolytic chelation theory
(B) Proteolytic theory
(C) Acidogenic theory
(D) Autoimmune theory

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

(A) Lactobacillus
(B) Strep. mutans
(C) Actinomyces
(D) Strep. viridans

(A) Dental caries
(B) Herpes simplex
(C) Lichen planus
(D) Syphilis

(A) Apex to apex
(B) Apex to base
(C) Base to base
(D) None of the above

(A) Maxillary 2nd molar
(B) Maxillary 1st premolar
(C) Mandibular 1st molar
(D) Mandibular 2nd molar