Prokaryotic RNA Polymerase and the Promoter
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Prokaryotic RNA polymerase binds a promoter, a DNA sequence upstream of a gene, to begin transcribing that gene into RNA.
Show
A single RNA polymerase transcribes every gene in a bacterium, guided to each gene's promoter in turn.
Watch for
A promoter's sequence determines how often its gene is transcribed — RNA polymerase itself does not vary between different genes.