Question

Plzz help

Which describes a promoter?

a. the first part of an operon that regulates where, when, and to what level a gene is
expressed

b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene

c. a cluster of genes that are expressed or repressed as a group

d.an enzyme that helps DNA unzip prior to transcription

Answer 1

a :)

Step-by-step explanation:

Answer 2

Answer: A

Explanation: email for more help my address is

charlescarey0906(at symbol)g ma il.com

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