Question

question 1 of 10
what happens right before rna polymerase begins to work?
a. rna polymerase reaches the end of the gene.
b. nucleic acids attach to the bases in the dna.
c. mrna detaches and moves to the ribosomes.
d. the dna double helix unwinds.

Explanation:

Before RNA polymerase starts transcription (its work), the DNA double - helix must unwind. This exposes the template strand for RNA synthesis. Option A is incorrect as reaching the end of the gene is related to termination, not the start. Option B is wrong because nucleic acids (RNA polymerase is a protein, and during transcription, ribonucleic acids are added later). Option C is incorrect as mRNA detaching and moving to ribosomes is part of translation (after transcription).

Answer:

D. The DNA double helix unwinds