The question is int three parts. The image below is a Voges-Proskauer test restu

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The question is int three parts. The image below is a Voges-Proskauer test restuls for two bacterial strains labeled A and B.

Click Submit to complete this assessment. Question 43 This question is in three parts. The image below is a Voges-Proskauer test result for two bacterial strains labeled A and B a. Which of the bacterial strains is exhibiting a positive result? b. What is the name of the product whose presence is indicated by the result? C. Why are the biochemical characteristics indicated by the positive result of this and the methyl red test useful (be specific)?

Explanation / Answer

Question 43.  

Answers -

Part a. Bacterial strain A exhibiting a positive result.

Part b. The presence of acetoin product is indicate by the result.

Part c. Change in colour (Reddish colour) . The change in colour due to addition alpha napthol and potassium hydroxide into bacterial inoculation.

Methyl red test is useful because it identified type of bacteria.

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