In eukaryotic cells, how do transcription factors act to control gene expression?

a. they remove introns from pre-mrna.
b. they bind to regulatory regions of dna near the genes.
c. they insert themselves into dna near the beginning of a gene.
d. they code for the synthesis of rna polymerase.

B

Explanation:

They can inhibit or promote RNA polymerase depending on whether it is a repressor or activator respectively.  They bind in the regulatory region on DNA, therefore, this means they will have a DNA-binding domain (DBD). They can physically block the polymerase from transcription or catalyze the acetylation or deacetylation of histone proteins.

the correct answer is b. possesses the characteristic of compartmentalization of organelles, wherein the organelles are bound by membranes.

explanation:

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .