有多種方法可用於偵測Staphylococcus spp.是否對oxacillin 具抗藥性,下列何者被視為標準方法(goldstandard)?
(A)Oxacillin disk diffusion test
(B)Oxacillin-salt agar screening test
(C)Cefoxitin disk diffusion test
(D)偵測mecA gene
臨床上要鑑定革蘭氏陽性球菌時,通常先操作何項生化試驗?
(A)Cytochrome oxidase test
(B)Modified oxidase test
(C)Catalase test
(D)β-lactamase test
下列何種測試方法無法用來診斷Clostridium difficile-associated diseases(CDAD)?
(A)Acridine orange stain
(B)GLC(Gas-Liquid Chromatography)
(C)EIA to detect enterotoxin A
(D)Cytotoxin B neutralization test
下列何者不是Clostridium perfringens 的特徵?
(A)Lecithinase on egg-yolk agar
(B)Double zone of hemolysis
(C)Terminal spore
(D)Nonmotile
下列何種培養基是用來培養疏螺旋菌(Borrelia spp.)?
(A)bovine serum albumin-Tween 80 medium
(B)Fletcher’s semisolid medium
(C)Stuart liquid medium
(D)modified Kelly’s medium
下列何種血清型(serovars)的砂眼披衣菌會引起砂眼(trachoma)?
(A)A, B, C
(B)M, N, O
(C)L1, L2, L3
(D)D-K
金黃色葡萄球菌對methicillin 產生抗藥性的主要機制為何?
(A)產生Penicillin-binding protein 2a(PBP 2a)
(B)產生Penicillinase
(C)改變PBP3
(D)改變D-alanyl-D-alanyl terminus
下列何種試驗無法鑑別Listeria monocytogenes 及Corynebacterium diphtheriae?
(A)Catalase test
(B)Motility test at 25℃
(C)Growth at 4℃
(D)Esculin hydrolysis
若金黃色葡萄球菌對penicillin G 具有抗藥性,但對oxacillin 敏感,則其抗藥性主要是下列何者促成的?
(A)β-lactamase
(B)PBP2a
(C)PBP2’
(D)PBP5
有少數Enterococcus faecalis 因產生β-lactamase 而對青黴素具高度抗藥性,下列何種方法最能有效偵測此種抗藥性?
(A)Penicillin disk diffusion test
(B)Oxacillin disk diffusion test
(C)Nitrocefin test
(D)以broth dilution 方法測oxacillin MIC
對polymyxin B 之感受性試驗,常應用在那一類細菌之鑑別上?
(A)凝固陰性葡萄球菌
(B)凝固陽性葡萄球菌
(C)β-溶血性鏈球菌
(D)草綠色鏈球菌
臨床上常用來鑑定Staphylococcus aureus 的乳膠凝集試劑,可偵測該菌體多種特有組成分,但無法偵測下列何者?
(A)Clumping factor(bound coagulase)
(B)Protein A
(C)Type 5 and 8 capsular polysaccharides
(D)Thermostable endonuclease
下列有關Pseudomonas aeruginosa 的敘述,何者正確?
(A)可在cetrimide agar 上生長
(B)可醱酵葡萄糖
(C)細胞色素氧化酶陰性
(D)不具運動性
以6-mm Optochin disk 鑑定肺炎雙球菌時,若形成的抑制圈直徑為13.5 mm,則宜用下列何項試驗進一步確認?
(A)Bile-solubility test
(B)Leucine aminopeptidase(LAP)test
(C)Pyrrolidonyl arylamidase(PYR)test
(D)Bile-esculin agar
下列何者不是A 群鏈球菌(Streptococcus pyogenes)的毒力因子(virulence factor)?
(A)Lipoteichoic acid
(B)Protein A
(C)Streptolysin O
(D)M protein
下列何項試驗不能用於鑑定B 群鏈球菌(S. agalactiae)?
(A)Sulfamethoxazole/trimethoprim susceptibility test
(B)CAMP test
(C)Hydrolysis of sodium hippurate
(D)Pigment production