I feel that my answer is not complete! Is the last answer correct ad well? umews

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I feel that my answer is not complete! Is the last answer correct ad well?

umewsrk. Catalase and Oxidase MicroLab Practical: Biochemical Tests - Oxidase test (dry slide) (2 of 2) Resources « previous | 8 of 9 next Part A Two different bacterial samples, A and B, were tested with an Oxidase dry slide. This is a picture of the test results BD BBLM DrySlide View the image in greater detail. Select ALL appropriate statements regarding the pictured Oxidase test results Specimen A shows a negative result Specimen A shows a positive result Specimen A is not a pathogen Specimen B shows a negative result Specimen B shows a positive result Specimen B most likely has a respiratory chain that uses oxygen as a final electron acceptor Submit My Answers Give Up Provide Feedback Continue 3

Explanation / Answer

In Oxidase dry slide, if the color changes to blue within the 20 sec, result is positive and if the color doesn't change to blue within 30 sec result is negative ie cytochrome C oxidase is absent

Correct answers are

Specimen A shows a negative result, Specimen B shows a positive result , Specimen B most likely has a respiratory chain that uses oxygen as a final electron acceptor.

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