which describes a promoter?\no the first part of an operon that regulates where, when, and to what level a…
which describes a promoter?\no the first part of an operon that regulates where, when, and to what level a gene is expressed\no the part of an operon that, if attached by a repressor protein, suppresses the expression of a gene\no a cluster of genes that are expressed or repressed as a group\no an enzyme that helps dna unzip prior to transcription
Answer
Brief Explanations:
A promoter is the first part of an operon that controls the where, when, and level of gene - expression. It is a DNA sequence where RNA polymerase binds to initiate transcription. The part of an operon that a repressor attaches to is the operator. A cluster of genes expressed or repressed as a group is an operon. The enzyme that helps DNA unzip prior to transcription is helicase.
Answer:
the first part of an operon that regulates where, when, and to what level a gene is expressed