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The Dotted Line in the Following Graph Shows Levels of Glucose

Question 51

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The dotted line in the following graph shows levels of glucose in a culture of wild-type E.coli grown in medium that initially contains both glucose and lactose.The solid line shows levels of transcription of the lac operon.Describe what is happening to the culture and the lac operon, referring to the lac repressor, allolactose, cAMP, and CAP (catabolite activator protein). The dotted line in the following graph shows levels of glucose in a culture of wild-type E.coli grown in medium that initially contains both glucose and lactose.The solid line shows levels of transcription of the lac operon.Describe what is happening to the culture and the lac operon, referring to the lac repressor, allolactose, cAMP, and CAP (catabolite activator protein).

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When glucose and lactose are present, E....

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