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.

Question

Miko

Biology

22 March, 05:23

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.

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Answers (1)

Know the Answer?

Emilee · Answer 1

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.

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.

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.