00:01
So this question is asking us to select everything that is true about, at least as far as these statements are concerned, about antimicrobial drug spectrum.
00:11
So the first one, broad spectrum antibiotics are often prescribed when exact bacterial pathogen is not known.
00:18
That is correct.
00:24
If it's not known, then typically they will provide, doctors will prescribe broad spectrum antibiotics to essentially, hopefully kill off whatever is causing an infection, even if they don't know.
00:36
That is the power of a broad spectrum antibiotic.
00:39
Okay, let's see.
00:40
B, one drawback of broad spectrum antibiotics is that they often damage the host normal flora.
00:46
That is also true, unfortunately.
00:48
That's why people are so, when basically you're given broad spectrum antibiotics, they also tell you to eat some yogurt, that's to replenish some of the gut microbiota.
01:03
So that's an example of that.
01:05
So c, antimicrobial drugs can chemically be modified to increase the spectrum of microbes that they are effective against...