Lab6B-1: Citrate Test

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Match the following outcome of the test to the final color of the media.

Positive for citrate permease: blue Negative for citrate permease: green

How is this metabolic test innoculated? A) With a needle, creating s-shaped curve on a slant B) needle quadrant method on a plate C) With a loop, creating s-shaped curve on a slant D) needle to broth

A

What is the indicator used in this metabolic test? A) bromothymol blue B) methylene blue C) bromcresol purple D) phenol red

A

A negative result in this test appears as a: A) Blue with growth B) Green no growth C) Blue no growth

B

A positive result for this metabolic test results in: A) green no growth B) blue with growth C) green with growth

B

What is the defining reagent in this media that is critical for determining the outcome (not the indicator)? A) permease B) citrate C) sucrose D) glucose

B

Match the indicator's color change to the environmental condition in this test.

Blue: basic Green: neutral

What is the outcome of the test below? A) Negative for citrate permease B) Negative for citrate C) Positive for citrate permease D) Positive for citrate

C

In the image below, what is the outcome of the test? A) Negative for citrate B) Positive for citrate permease C) Positive for citrate D) Negative for citrate permease

D

This metabolic test specifically tests for: A) bromothymol blue. B) citrate. C) amylase. D) citrate permease.

D


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