Positive and Negative Control Questions: Please complete the following table to describe which bacterial species should be...

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Biology

Positive and Negative Control Questions:

Please complete the following table to describe which bacterialspecies should be used as positive and negative controls for eachtest. The table at the bottom of this page will help youcomplete this task. Thenexplains about

What can you learn about a microbe bydoing the Phenol Red test, how do youconduct the Phenol Red test?

What does a positive Phenol Red test look like?(mention acid formation and gasformation)

What does a negative Phenol Red test looklike?(mention acid formation and gasformation)

Positive Control SpeciesNegative Control Species
Catalase
PR-Glucose
PR- Lactose
PR- Sucrose
Oxidase Test

The table below describes the cultures we will have available touse as positive and negative controls.

TEST RESULTS OF AVAILABLE CULTURES:

Catalase

PR- Glucose

PR- Lactose

PR- Sucrose

Oxidase

Alcaligenes

(Note* Alcaligenes does not use carbohydratesin its metabolism)

+

-

-

-

+

E. coli

+

+

+

Variable

-

Lactococcus

-

Data Not Available

Data Not Available

Data Not Available

Data Not Available

Pseudomonas

+

-

-

-

+

Answer & Explanation Solved by verified expert
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positive control negative control catalase Ecoli lactococcus PRGlucose Ecoli Pseudomonas PRlactose Ecoli Pseudomonas PRSucrose Ecoli Pseudomonas Oxidase test Psedumonas Ecoli Phenol red test is used to check    See Answer
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