BIOCHEMICAL TESTING: ENTEROBACTERIACEAE
Authored by Daverich Hoyle 侯英敏
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115 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All Enterobacteriaceae spp. are Oxidase negative except:
Plesiomonas shigelloides
Shigella dysenteriae
Erwinia
Pantoea agglomerans
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All Enterobacteriaceae spp. are Catalase positive except:
Plesiomonas shigelloides
Shigella dysenteriae
Erwinia
Pantoea agglomerans
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
All Enterobacteriaceae spp. reduce nitrate to nitrite except:
Plesiomonas shigelloides
Shigella dysenteriae
Erwinia
Pantoea agglomerans
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Principle/purpose: Detects the presence of cytochrome oxidase
Oxidase test
Nitrate reduction
ONPG test
Oxidation/Fermentation (Hugh-Leifson) test
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Principle/purpose: Detects the presence of nitrate reductase/nitrosoreductase.
Oxidase test
Nitrate reduction
ONPG test
Oxidation/Fermentation (Hugh-Leifson) test
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Principle/purpose: Detects the presence of β-galactosidase. Determines the presence of late and slow lactose - fermenting strains
Oxidase test
Nitrate reduction
ONPG test
Oxidation/Fermentation (Hugh-Leifson) test
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Principle/purpose: Determines whether an organism utilizes carbohydrates anaerobically (fermentation) or aerobically (oxidation)
Oxidase test
Nitrate reduction
ONPG test
Oxidation/Fermentation (Hugh-Leifson) test
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