Question

Discuss selective and differential media and give examples of each.

Answer 1

Selective and differential media are accustom to isolate or identify particular organisms. Selective media also allow certain sorts of organisms to grow and inhibit the growth of other organisms. The selectivity is accomplished in many more ways.
For example, organisms which can utilize a given sugar are easily screened by making that sugar the sole carbon source within the medium.

Differential media allow us to differentiate closely related organisms or groups of organisms. The presence of certain dyes or chemicals within the media, the organisms will produce some changes or growth patterns which will be used for identification. example Blood agar, which contains bovine heart blood that becomes transparent in the presence of hemolytic

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