00:02
So this question is about rifampin, which is an antibiotic, kill bacteria.
00:08
And this antibiotic has a interaction with the rna polymerase.
00:15
And it says it works by blocking the sites on the preliminaries where the growing mrna binds during rna synthesis.
00:24
And we want to know which phase it is.
00:26
So the initiation phase, oops, of transcription.
00:33
This is when the polymerase is going to attach to the dna and sort of get transcription started.
00:45
So it doesn't sound like it's the initial binding of the polymerase.
00:51
Elongation is when we are making the mrna.
00:56
So we're growing the nucleotide strand.
00:58
That sounds very much like what this antibiotic is blocking.
01:05
But let's just kind of go and continue...