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Question 1

Compare and contrast the streak-plate method of isolation with the pour-plate method of isolation.

Question 2

Genetic methods of detecting microorganisms reveal that the number of bacterial species in nature exceeds previous estimates by several orders of magnitude. In human mouths, for example, it is estimated that 500-700 microbial species are normally present. Explain why previous estimates were low.


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Marked as best answer by abc on Oct 17, 2019

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