Question

what happens right before transcription begins?
a. mrna is produced from nucleic acids.
b. the transcription process stops.
c. dna is produced from the mrna.
d. rna polymerase is guided to the correct place.

Explanation:

Transcription is the process of making RNA from DNA. RNA polymerase is the enzyme that catalyzes this reaction. Before transcription begins, RNA polymerase must be guided to the specific region of DNA (the promoter region) where transcription will start. Option A is incorrect as mRNA is produced during transcription, not before. Option B is wrong since it refers to the end - not the start. Option C is incorrect because DNA is not produced from mRNA in the pre - transcription stage; rather, mRNA is produced from DNA during transcription.

Answer:

D. RNA polymerase is guided to the correct place.