150-19generegulation[1]

150-19generegulation[1] - Foundations of Biological Science...

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Foundations of Biological Science I (BioSci 150) C Control of Gene Expression Bacteria Eukaryotes
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Foundations of Biological Science I (BioSci 150) C Gene regulation in prokaryotes typically a response to change in environment organization of genes in operons allows coordinated regulation. Programmed development responses to environmental change and to internal chemical signals. Gene regulation in eukaryotes 0
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Foundations of Biological Science I (BioSci 150) C Cells regulate metabolite levels by: Controlling the activity of enzymes that produce or degrade them. How do cells typically do this? Controlling the absolute amount of these enzymes in the cell. Cells can do this in more than one way. State two of them.
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Foundations of Biological Science I (BioSci 150) C Reminder: many prokaryotic genes are organized into multigene operons lac operon Y Z A trp operon 1 2 3 4 5 1 2 3 4 5 mRNA Y Z A mRNA … coding for related proteins, e.g., enzymes in the same pathway. 0
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Foundations of Biological Science I (BioSci 150) C 1 2 3 4 5 1 2 3 4 5 Repression of the trp operon with a co-repressor : Transcription repressed When trp accumulates to excess. .. RNA polymerase binds but can’t move forward. .. RNA polymerase binds to the promoter.
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150-19generegulation[1] - Foundations of Biological Science...

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