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Unformatted text preview: mal operon promoter so that it was repressed by the MalT activator? 5) The following graph shows a time course of glucose (solid line) and lactose (dashed line) concentrations of a culture of E. coli growing with both sugars. What type of regulation is occurring in this culture prior to lactose consumption? Why is glucose used up before lactose? What are the molecular events for this type of regulation of lactose metabolism? 5) How does FNR differ with and without oxygen? What would be the growth physiologies of an fnr mutant for nitrate, fumarate, DMSO, and oxygen respiration?...
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- Fall '08