00:01
Which of these apply to bacteria? multiple nuclei in each cell.
00:06
Lacking cell walls.
00:08
Some live in our intestines to help with digestion.
00:11
Some make pharmaceuticals.
00:13
They are important to decomposers and producers.
00:16
Or they are earth's oldest organisms.
00:20
Okay.
00:20
So bacteria are a domain of life and they are prokaryotes.
00:25
So they don't have nuclei.
00:27
They don't even have one nucleus, less alone multiple.
00:30
Do they have a cell wall? most of them have cell, well, all of them have cell walls.
00:36
They have a peptidoglycan cell wall.
00:40
It can be a thin cell wall between two membranes in gram negative.
00:43
It can be a thick cell wall in gram positive, but they all have one.
00:48
See, here's our first true statement.
00:51
There are bacteria in your intestines, and they do help with digestion...