1. The mixed culture in an experiment was prepared by mixing overnight E. coli and S. aureus...

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Biology

1. The mixed culture in an experimentwas prepared by mixing overnight E. coli and S.aureus cultures in the ratio 2:8. However, there seemed to bemore E. coli growth on the resulting streak plate thanS. aureus growth. Explain this.Â Â
2. It was observed that some coloniesof the same bacterial species appeared in different sizes on thestreak plates. Give the possible reason for this.
3. Is it better to prepare pureculture in broth or on agar plate?Explain.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

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1 The mixed culture in an experiment was prepared by mixing overnight E coli and S aureus cultures in the ratio 28 However there seemed to be more E coli growth on the resulting streak plate than S aureus growth The reason for the above observation is becuase of the difference of doubling time of EColi and Saureus Doubling time refers to the amount of time required by a cell to See Answer

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