the-phenol-red-fermentation-test-is-usually-used-to-differentiate-organisms-base

Question

The phenol red fermentation test is usually used to differentiate organisms based on their ability to ferment carbohydrates such as from a glucose broth. If the color turns yellow at the end of the test, what does this result imply?

Accepted Answer

A carbohydrate fermentation occurred.

Answer

No carbohydrate fermentation took place.

Answer

The broth did not contain enough carbohydrates.

Answer

There was a contamination during the experiment.

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The phenol red fermentation test is usually used to differentiate organisms based on their ability to ferment carbohydrates such as from a glucose broth. If the color turns yellow at the end of the test, what does this result imply?