/44 471 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) A bacterium that is usually found in tongue π a. Streptococcus pneumoniae b. Staphylococcus epidemidis c. Streptococcus mitis d. Clostridium difficile 2 / 44 2) Principal Rods Gram positive bacteria found in oral cavity:? a. Simonsiella b. Eikenella c. Actinomyces d. Prevotella 3 / 44 3) Pathway in order of pathogenesis of oral infection:? a. Entry of bacteria into soft tissue wall or trauma to the orifice – Formation of infiltrate- Destruction of connective tissues- Pus formation- Decrease tissue resistance and increase number of bacteria with virulence b. Pus formation- Entry of bacteria into soft tissue wall or trauma to the orifice – Formation of infiltrate- Destruction of connective tissues- Decrease tissue resistance and increase number of bacteria with virulence c. Decrease tissue resistance and increase number of bacteria with virulence- Entry of bacteria into soft tissue wall or trauma to the orifice – Formation of infiltrate- Destruction of connective tissues- Pus formation d. Entry of bacteria into soft tissue wall or trauma to the orifice – Pus formation- Formation of infiltrate – Destruction of connective tissues – Decrease tissue resistance and increase number of bacteria with virulence 4 / 44 4) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus b. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti c. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti d. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti 5 / 44 5) The most common bacteria that are always presence in mouth as a normal flora, which proposition is inexact? a. D. Gonococcus b. B. Actinomyces c. C. Prevotella d. A. Streptococcus 6 / 44 6) Analytical techniques for monitoring biofilms by βDirect detectionβ π a. High Pressure Liquid Chromatography (HPLC) b. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) c. Microscopy techniques d. Gas Chromatography – Mass Spectrometry (GC-MS) 7 / 44 7) Antibiotic which is common use to treat anaerobic bacteria π a. Gentamicin b. Metronidazole c. Vancomycin d. Colistin 8 / 44 8) Principal Cocci Gram negative bacteria found in oral cavity:? a. Veillonella b. Gemella c. Streptococcus d. Enterococcus 9 / 44 9) In dental caries, the protective factor is π a. Frequent eating / drinking of fermentable carbohydrates b. Acid producing bacteria c. Antibacterials ( fluorides, Chlorhexidine, Xylitol) d. Poor oral hygiene 10 / 44 10) Which bacteria that is not always presence in saliva:? a. Streptococcus agalactiae b. Streptococcus mitis c. Streptococcus oralis d. Streptococcus salivarius 11 / 44 11) Among 4 phases of biofilm formation, the phase that is done the longest, about 7-14 days is:? a. Phase 4 b. Phase 3 c. Phase 2 d. Phase 1 12 / 44 12) Major bacteria usually cause dental caries:? a. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus b. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus c. Mutans Streptococci, Lactobacilli, Actinomyces vicosus d. Mutans Streptococci, Lactobacilli, Clostridium 13 / 44 13) Principal Cocci Gram positive bacteria found in oral cavity:? a. Peptostreptococcus b. Veillonella c. Neisseria d. Moraxella 14 / 44 14) The most common bacterium that is responsible for tonsillitis and pharyngitis is:? a. Group-A beta hemolytic Streptococcus ( Streptococcus pyogenses) b. Streptococcus mitis c. Streptococcus mutans d. Group-B beta hemolytic Streptococcus ( Streptococcus agalactiae) 15 / 44 15) Factor that does not influence to dental caries? a. Duration and frequency of exposure b. Individual factor c. Size and form of teeth d. Substrate for microorganisms 16 / 44 16) Dental caries, which answer is incorrect? a. Characterized by demineralization of the inorganic portion b. Multifunctional microbial disease c. Calcified tissues of the teeth d. Increased of the organic substance of the tooth 17 / 44 17) Steps in order to perform bacteriological diagnostic of oral microbiology:? a. Direct examination , Gram stain, Antimicrobial Susceptibility testing, Culture , Identification , b. Direct examination , Gram stain, Culture , Identification , Antimicrobial Susceptibility testing c. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , d. Identification , Direct examination , Gram stain, Culture , Antimicrobial Susceptibility testing 18 / 44 18) Strategy to control of biofilm pH in oral biofilm:? a. Inhibition of key microbial enzyme b. Antiflammatory agents c. Fluoride d. Generating nutrients 19 / 44 19) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in salivary flow b. Administration of antibiotics c. Changes in exposure to antiseptic d. Changes in the immune system 20 / 44 20) Among 4 phases of biofilm formation, the phase that is done immediately about 4 hours is:? a. Phase 4 b. Phase 3 c. Phase 1 d. Phase 2 21 / 44 21) Bacteria usually cause Necrotizing Ulcerative Gingivitis? a. Borrelia vincentii and Eikenella corrodens b. Fusiform bacillus and Capnocytophaga sputigena c. Borrelia vincentii and Porphyromonas endodontalis d. Fusiform bacillus and Borrelia vincentii 22 / 44 22) Bacteria usually cause Pericoronitis? a. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens b. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga c. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena d. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen 23 / 44 23) Which bacteria that is not presence in buccal mucosa? a. Treponema palidum b. Streptococcus mutans c. Streptococcus anginosus d. Streptococcus mitis 24 / 44 24) Steps in order for biofilm formation:? a. Maturation and detachment, adhesion, colonization, coadhesion b. Adhesion, colonization, coadhesion , maturation and detachment c. Coadhesion , adhesion, colonization, maturation and detachment d. Colonization , adhesion, coadhesion , maturation and detachment 25 / 44 25) Microorganisms in oral tissue can cause π a. Local infection b. Both, local and systemic infection c. Only local infection d. Systemic infection 26 / 44 26) Principal Rods Gram negative bacteria found in oral cavity:? a. Corynebacterium b. Eubacterium c. Lactobacillus d. Porphyromonas 27 / 44 27) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Fusobacterium nucleatum b. Enterococcus stains c. Streptococcus strains d. Staphylococcus stains 28 / 44 28) Specificity of Anaerobic bacteria, except:? a. Grow on anaerobic media culture b. Black pigmentation on culture c. Foul odor when opening anaerobic jar or bag d. Incubation culture in 1-2 days 29 / 44 29) Oral opportunistic infection happens when:? a. An organism that usually is nonpathogenic has no opportunity to cause disease b. An organism that usually is pathogenic causes disease c. An organism that usually is pathogenic becomes normal flora d. An organism that usually is nonpathogenic causes disease 30 / 44 30) A bacterium that never found in tooth surface:? a. Streptococcus pneumoniae b. Streptococcus anginosus c. Streptococcus mutans d. Streptococcus mitis 31 / 44 31) Major bacteria cause aggressive periodontitis? a. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia b. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae c. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae d. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae 32 / 44 32) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Enterococcus b. Staphylococcus c. Helicobacter d. Pseudomonas 33 / 44 33) In dental caries, the pathogenic factor is π a. Remineralization ( fluoride, Calcium, Phosphate) b. Good oral hygiene c. Saliva flow and components d. Acid producing bacteria 34 / 44 34) Diseases are always found in oral cavity, except π a. Tuberculosis b. Typhoid fever c. Syphilis d. Gonococci 35 / 44 35) Antimicrobial against Porphyromonas gingivalis is π a. Vancomycin b. Kanamycin c. Erythromycin d. Metronidazole 36 / 44 36) Strategy to control of nutrients in oral biofilm:? a. Fluoride b. Antimicrobial agents c. Stimulate base production d. Inhibition of key microbial enzyme 37 / 44 37) Major bacteria cause chronic periodontitis:? a. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, E.coli b. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae,Stphylococcus aureus c. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Pseudomonas aeruginosa d. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Streptococcus anginosus 38 / 44 38) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Streptococcus stains b. Enterococcus stains c. Staphylococcus stains d. Pseudomonas stains 39 / 44 39) Strategy to control of rendox potential in oral biofilm:? a. Fluoride b. Oxygenating agents c. Inhibition of key microbial enzyme d. Stimulate base production 40 / 44 40) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. Detection of DNA by molecular biology technique b. Detection of proteins by molecular biology technique c. High Pressure Liquid Chromatography (HPLC) d. Microscopy techniques 41 / 44 41) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Mouth b. Subvenous catheter c. Artificial hip implant d. Genital infection 42 / 44 42) A bacterium that spread from lung infection and cause oral lesions with clinical sign include fever, chills, fatigue and malaise, weight loss, and persistent cough π a. Mycobacterium tuberculosis b. Pseudomonas aeruginosa c. Streptococcus pneumoniae d. Klebsiella pneumoniae 43 / 44 43) The comment bacterium causes dental caries:? a. E.coli b. Pseudomonas aeruginosa c. Staphylococcus aureus d. Mutans Streptococci 44 / 44 44) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Pseudomonas aeruginosa b. Streptococcus pneumoniae c. Mycobacterium tuberculosis d. Klebsiella pneumoniae Your score isThe average score is 84% Facebook 0% Restart quiz Any comments? Send feedback
