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