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