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Rachel was very sick with a bacterial infection. The infection was treated with antibiotics. Rachel seemed to get well, but in a few weeks, she was sick again. How can this be explained? the antibiotics did not kill the bacteria; it forced them to be dormant the stronger, more resistant bacteria survived the antibiotics and reproduced antibiotics only kill a portion of the bacteria, regardless how much medicine Rachel takes

User Will Stone
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1 Answer

4 votes

Answer:

Selective pressure: The bacteria become susceptible to the drug and can withstand it.

User Pbnelson
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