1- Explain why it is very important to have a pure culture and not a mixed culture when performing biochemical tests.
2- Explain how culturing an organism on several different types of media can help identify an organism in a relatively short period of time.
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1. Having a mixed culture when performing biochemical tests may lead to inaccurate results. For example, if an oxidase-negative culture is contaminated with oxidase-positive microbes, the biochemical test would indicate that the sample is oxidase positive. This would lead to difficulties in identifying the infective agent. This could occur ...
This solution explains why it is important to have a pure culture when performing biochemical tests. Additionally, this solution explains how culturing an organism on a variety of media can be used to more quickly identify the microbe.