00:01
These are images of bacterial cells and not part of tissue.
00:05
The image on the right is of higher magnification, so the individual prokaryotic cells are observed.
00:12
Second, we have the scanning, which is the scanning electron microscope.
00:20
Only shows the image of the surface of the bacteria.
00:25
The electrons interact with the atoms in the sample, producing various signals that contain, information about the surface topography.
00:36
Now from the bacterial cells have the following features in common.
00:40
First one is cell envelope.
00:43
It is the outer covering of protoplasm of bacterial cells and cell envelope consists of glycolics cell wall and cell membrane.
00:53
We have also the cytoplasm.
00:56
It is colloidal complex that forms the protoplasm, excluding the nucleoid.
01:02
Cytoplasin contains marosomes and ribosomes.
01:07
Next one is we have also the nucleoid.
01:11
This consists of a circular dna which is supercoiled with the help of rna and polyamines...