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How do bacteria regulate transcription of these operons?

The trp and lac operons are regulated in various ways. How do bacteria regulate transcription of these operons? Categories. 1) operon is not transcribed 2) operon is transcribed, but not sped up by the positive control 3) operon is transcribed quickly through postive control Match each of these into the above categories

Atrp operon: tryptophan absent
Blac operon: lactose absent
Clac operon: lactose present, glucose absent
Dlac operon: lactose present, glucose present e) trp operon: tryptophan present

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1. operon is not transcribe• b.) lac operon: lactose absent• e.) trp operon: tryptophan present2. operon is transcribed, but not sped up by the positive control• a.) trp operon: tryphophan absent• d.) lac operon: lactose present, glucose present3. operon is transcribed quicklu through positive control• c.) lac operon: lactose present, glocuse absent

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