(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

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

(A) Exist regularly in the dental plaque
(B) Be lethal for gnotobiotic animals
(C) Produce extracellular amylopectins
(D) Produce intracellular dextrans

(A) Fructose
(B) Glucose
(C) Sucrose
(D) Lactose

(A) Negligence in visiting the dentist
(B) Frequency of sucrose intake
(C) Rapid growth
(D) Carelessness in oral hygiene habits

(A) Advancing bacteria
(B) Pioneer bacteria
(C) Microcosm
(D) Anaerobic bacteria

(A) Veillonella
(B) Lactobacilli
(C) Streptococci
(D) Bateroides

(A) Significant decrease in number of oral bacteria
(B) Shift towards more acidogenic microflora
(C) Significant increase in number of oral bacteria
(D) Shift towards more aerobic microflora