JP Lab6A-6: PR Test

How is this metabolic test innoculated? A) loop to broth transfer B) spread plating C) stab with a needle D) pasteur pipette

A

What would a bacteria that could perform fermentation and consume amino acids look like on this test? A) Yellow B) Pink C) Red

A

What are the results of the organism below on the PR test? (The tube is PINK not red) A) Fermentation -, Gas -, Amino Acid ? B) Fermentation -, Gas -, Amino Acid + C) Fermentation -, Gas -, Amino Acid - D) Fermentation +, Gas -, Amino Acid ? E) Fermentation +, Gas +, Amino Acid ?

B

What are the results of the organism below on the PR test? (The tube is red) A) Fermentation -, Gas -, Amino Acid ? B) Fermentation -, Gas -, Amino Acid - C) Fermentation -, Gas -, Amino Acid + D) Fermentation -, Gas +, Amino Acid +

B

What component of this media is being fermented? A) phenol red B) amino acids C) carbohydrate

C

What is the purpose of the durham tube? A) create an anaerobic environment B) reduce the diffusion of O2 C) capture gas released by fermentation D) trap O2

C

What is the indicator used in this metabolic test? A) neutral red B) bromthymol blue C) methyl red D) phenol red

D

What are the results of the organism below on the PR test? A) Fermentation +, Gas +, Amino Acid + B) Fermentation -, Gas +, Amino Acid ? C) Fermentation +, Gas +, Amino Acid - D) Fermentation +, Gas -, Amino Acid ? E) Fermentation +, Gas +, Amino Acid ?

E

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

Yellow with bubble: fermentation with gas production, amino acid consumption ? Yellow without bubble: fermentation without gas production, amino acid consumption ? Red without bubble: negative for fermentation, no gas production, amino acid consumption - Pink without bubble: negative for fermentation, no gas production, amino acid consumption +

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

Yellow: Acidic Red: Neutral Pink: Basic