Answered: what does it mean if a bacteria tested…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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what does it mean if a bacteria tested negative for oxidase

Expert Solution

Step 1

The oxidase test in bacteria is performed to confirm the production of cytochrome c oxidase. It is a complex transmembrane protein and the end enzyme in the electron transport process of bacteria. The purpose of this test is:

Identification of anaerobes by testing the production of cytochrome c oxidase.
The differentiation between the Pseudomonas and other bacterial colonies.

Step 2

The experiment gives us two observations positive or negative. When a bacteria gives positive results in the oxidase test it means the use of oxygen as an end molecule in the electron transport process. When a bacteria gives negative results there could be a chance of aerobic, anaerobic, or facultative bacteria in the sample. It confirms that these bacterias do not use cytochrome c oxidase for the electron transport process.

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