/44 471 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) Major bacteria cause aggressive periodontitis? a. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia b. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae c. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae d. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae 2 / 44 2) 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) 3 / 44 3) Bacteria usually cause Pericoronitis? a. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen b. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena c. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga d. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens 4 / 44 4) Antimicrobial against Porphyromonas gingivalis is 😕 a. Erythromycin b. Vancomycin c. Metronidazole d. Kanamycin 5 / 44 5) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Pseudomonas b. Helicobacter c. Staphylococcus d. Enterococcus 6 / 44 6) Antibiotic which is common use to treat anaerobic bacteria 😕 a. Metronidazole b. Colistin c. Vancomycin d. Gentamicin 7 / 44 7) Principal Rods Gram positive bacteria found in oral cavity:? a. Simonsiella b. Actinomyces c. Prevotella d. Eikenella 8 / 44 8) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Staphylococcus stains b. Pseudomonas stains c. Streptococcus stains d. Enterococcus stains 9 / 44 9) Which bacteria that is not presence in buccal mucosa? a. Streptococcus anginosus b. Streptococcus mutans c. Treponema palidum d. Streptococcus mitis 10 / 44 10) Principal Rods Gram negative bacteria found in oral cavity:? a. Lactobacillus b. Eubacterium c. Corynebacterium d. Porphyromonas 11 / 44 11) Diseases are always found in oral cavity, except 😕 a. Typhoid fever b. Gonococci c. Syphilis d. Tuberculosis 12 / 44 12) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in exposure to antiseptic b. Changes in the immune system c. Administration of antibiotics d. Changes in salivary flow 13 / 44 13) Specificity of Anaerobic bacteria, except:? a. Foul odor when opening anaerobic jar or bag b. Black pigmentation on culture c. Incubation culture in 1-2 days d. Grow on anaerobic media culture 14 / 44 14) Strategy to control of nutrients in oral biofilm:? a. Antimicrobial agents b. Stimulate base production c. Fluoride d. Inhibition of key microbial enzyme 15 / 44 15) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Streptococcus strains b. Enterococcus stains c. Staphylococcus stains d. Fusobacterium nucleatum 16 / 44 16) A bacterium that is usually found in tongue 😕 a. Clostridium difficile b. Streptococcus mitis c. Staphylococcus epidemidis d. Streptococcus pneumoniae 17 / 44 17) Major bacteria cause periodontitis 😕 a. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti b. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti c. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti d. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus 18 / 44 18) The comment bacterium causes dental caries:? a. E.coli b. Staphylococcus aureus c. Pseudomonas aeruginosa d. Mutans Streptococci 19 / 44 19) Among 4 phases of biofilm formation, the phase that is done immediately about 4 hours is:? a. Phase 2 b. Phase 3 c. Phase 4 d. Phase 1 20 / 44 20) 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 – Pus formation- Formation of infiltrate – Destruction of connective tissues – 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 – Formation of infiltrate- Destruction of connective tissues- Pus formation- Decrease tissue resistance and increase number of bacteria with virulence 21 / 44 21) Analytical techniques for monitoring biofilms by “Indirect detection” 😕 a. Detection of DNA by molecular biology technique b. Microscopy techniques c. Detection of proteins by molecular biology technique d. High Pressure Liquid Chromatography (HPLC) 22 / 44 22) Analytical techniques for monitoring biofilms by “Direct detection” 😕 a. Gas Chromatography – Mass Spectrometry (GC-MS) b. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) c. High Pressure Liquid Chromatography (HPLC) d. Microscopy techniques 23 / 44 23) 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. Identification , Direct examination , Gram stain, Culture , Antimicrobial Susceptibility testing d. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , 24 / 44 24) Strategy to control of biofilm pH in oral biofilm:? a. Antiflammatory agents b. Fluoride c. Generating nutrients d. Inhibition of key microbial enzyme 25 / 44 25) Factor that does not influence to dental caries? a. Substrate for microorganisms b. Individual factor c. Size and form of teeth d. Duration and frequency of exposure 26 / 44 26) Principal Cocci Gram positive bacteria found in oral cavity:? a. Moraxella b. Veillonella c. Neisseria d. Peptostreptococcus 27 / 44 27) In dental caries, the pathogenic factor is 😕 a. Good oral hygiene b. Remineralization ( fluoride, Calcium, Phosphate) c. Acid producing bacteria d. Saliva flow and components 28 / 44 28) Principal Cocci Gram negative bacteria found in oral cavity:? a. Streptococcus b. Gemella c. Veillonella d. Enterococcus 29 / 44 29) A bacterium that never found in tooth surface:? a. Streptococcus anginosus b. Streptococcus mutans c. Streptococcus pneumoniae d. Streptococcus mitis 30 / 44 30) Steps in order for biofilm formation:? a. Colonization , adhesion, coadhesion , maturation and detachment b. Maturation and detachment, adhesion, colonization, coadhesion c. Coadhesion , adhesion, colonization, maturation and detachment d. Adhesion, colonization, coadhesion , maturation and detachment 31 / 44 31) Which bacteria that is not always presence in saliva:? a. Streptococcus mitis b. Streptococcus salivarius c. Streptococcus agalactiae d. Streptococcus oralis 32 / 44 32) Strategy to control of rendox potential in oral biofilm:? a. Oxygenating agents b. Inhibition of key microbial enzyme c. Fluoride d. Stimulate base production 33 / 44 33) Major bacteria cause chronic periodontitis:? a. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Streptococcus anginosus b. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae,Stphylococcus aureus c. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, E.coli d. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Pseudomonas aeruginosa 34 / 44 34) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Klebsiella pneumoniae b. Pseudomonas aeruginosa c. Mycobacterium tuberculosis d. Streptococcus pneumoniae 35 / 44 35) 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 36 / 44 36) Microorganisms in oral tissue can cause 😕 a. Both, local and systemic infection b. Local infection c. Only local infection d. Systemic infection 37 / 44 37) Bacteria usually cause Necrotizing Ulcerative Gingivitis? a. Borrelia vincentii and Porphyromonas endodontalis b. Borrelia vincentii and Eikenella corrodens c. Fusiform bacillus and Capnocytophaga sputigena d. Fusiform bacillus and Borrelia vincentii 38 / 44 38) Major bacteria usually cause dental caries:? a. Mutans Streptococci, Lactobacilli, Clostridium b. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus c. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus d. Mutans Streptococci, Lactobacilli, Actinomyces vicosus 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) The most common bacteria that are always presence in mouth as a normal flora, which proposition is inexact? a. A. Streptococcus b. C. Prevotella c. D. Gonococcus d. B. Actinomyces 41 / 44 41) 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 😕 a. Streptococcus pneumoniae b. Klebsiella pneumoniae c. Mycobacterium tuberculosis d. Pseudomonas aeruginosa 42 / 44 42) Among 4 phases of biofilm formation, the phase that is done the longest, about 7-14 days is:? a. Phase 4 b. Phase 1 c. Phase 2 d. Phase 3 43 / 44 43) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Genital infection b. Artificial hip implant c. Subvenous catheter d. Mouth 44 / 44 44) In dental caries, the protective factor is 😕 a. Poor oral hygiene b. Antibacterials ( fluorides, Chlorhexidine, Xylitol) c. Acid producing bacteria d. Frequent eating / drinking of fermentable carbohydrates Your score isThe average score is 84% Facebook 0% Restart quiz Any comments? Send feedback
