This reagent is used to demonstrate a positive phenylalanine deaminase test.
A) 10% ferric chloride
B) Methyl red
C) a-Naphthol
D) 40% sodium hydroxide

Question

Quizplus · Accepted Answer

The addition of 10% ferric chloride results in a green color if phenylpyruvic acid is present.Methyl red is an indicator found in the methyl red test broth.Both a-naphthol and 40% sodium hydroxide are used in the Voges-Proskauer test.

This Reagent Is Used to Demonstrate a Positive Phenylalanine Deaminase