When the intracellular level of lactose drops, the repressor protein binds to the operator of the lac operon and shuts down translation of the lac structural genes.
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Q44: Some transcription factors, such as leucine zipper
Q45: Transcription factors that increase the rate of
Q46: Long coding RNAs (lnc RNAs) are characterized
Q47: Describe two ways in which posttranscriptional gene
Q48: Constitutive genes code for proteins that are
Q50: A cell may meet the demand for
Q51: Explain the respective advantages associated with operons
Q52: Proteolytic processing of eukaryotic proteins involves:
A) removal
Q53: Leucine zipper proteins regulate transcription by:
A) forming
Q54: Some eukaryotic DNA sequences act as introns
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