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BIOCHEMICAL TESTING: ENTEROBACTERIACEAE

Authored by Daverich Hoyle 侯英敏

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BIOCHEMICAL TESTING: ENTEROBACTERIACEAE
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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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