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