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 dna unzip prior to transcription

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

What is the problem in this article? what solution does the article propose?

The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl