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Topic:

Biochemical Tests

Essay Instructions:

Research about biochemical tests. Based on your research and readings, respond to the following:
Why is it important to have a pure culture and not a mixed culture when performing biochemical tests?
How does culturing an organism on several different types of media help identify an organism in a relatively short period of time?
What is the technique used to isolate pure cultures from a specimen that contains mixed flora? Describe the technique.
What are the characteristics by which bacterial colonies may be distinguished? Describe at least four such characteristics.
Please use the APA guidelines to include in text citations



Essay Sample Content Preview:

Biochemical Tests
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Biochemical Tests
Every microbiologist must be well competent with all types of biochemical tests. These are tests applied to identify bacterial species by considering their biochemical activities. The paper probes biochemical tests, pure cultures, and microbial colonies.
Importance of Pure Culture in Biochemical Test
Pure culture should be used in a biochemical test instead of a mixed culture since it uniquely and qualitatively reacts when combined with other products. Additionally, pure culture quickly detects the bacterial presence and their level of impact (Austin, 2017). Lastly, they generate accurate information and identifies microorganisms than mixed cultures.
Culturing an Organism on Different Media
Cultural organisms in different media enable one to determine an organism quickly since bacterial growth varies depending on the media (Austin, 2017). Different media contains unique components for bacterial growth; therefore, it is easy to identify an organism. For instance, broth in basic media stimulates growth; thus, a biologist competently identifies an organism.
Pure Cultures Isolation
The streak plate technique is necessary for isolating pure cultures in a mixed flora environment. It is a technique whereby a bacteria grows in a specific medium, then a microbiologist isolates and samples the bacterial colonie...
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