The principle of the citrate test includes all the following, except:
A) Bacteria able to use citrate will use the ammonium salts releasing ammonia.
B) The alkaline pH that results from use of the ammonium salts changes the pH indicator.
C) The pH indicator changes from red to bright yellow.
D) The pH indicator changes from green to blue.

Question

Quizplus · Accepted Answer

The citrate test's principle involves bacteria utilizing citrate and ammonium salts, leading to an alkaline pH that changes the pH indicator. However, the correct color change for a positive citrate test is from green to blue, not from red to bright yellow.

The Principle of the Citrate Test Includes All the Following