Bacterial Gene Regulation Video Lessons

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Problem: When arabinose is present and glucose is absent,A. the ara operon will be turned on by positive controlB. the ara operon will be turned on by negative controlC. the ara operon will be turned off by positive controlD. the ara operon will be turned off by negative controlE. the ara operon will first turn on then turn off

FREE Expert Solution

In bacteria, the expression of genes whose products are involved in related processes are regulated by a simple mechanism. This gene cluster, along with its promoter and all other sequences, is called an operon.

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Problem Details

When arabinose is present and glucose is absent,

A. the ara operon will be turned on by positive control

B. the ara operon will be turned on by negative control

C. the ara operon will be turned off by positive control

D. the ara operon will be turned off by negative control

E. the ara operon will first turn on then turn off

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