[Music] hi and welcome back to frees science lessons. co.uk by the end of this video you should be able to describe the differences and the similarities between eukariotic cells and procaryotic cells I'm showing you here a picture of an animal cell and a plant cell now both animals and plants are ukar the most obvious feature of an animal or plant cell is that got a nucleus and I'm showing you that here the nucleus contains the genetic material of these cells in other words the DNA so this brings us to the definition of eukaryotic cells eukaryotic cells contain their genetic material enclosed in a nucleus and it's really important that you learn that definition I'm showing you here a drawing of a eukaryotic cell again we can see the genetic material enclosed in a nucleus but animal and plant cells also have two other features which you need to learn around the edge of the cell we've got the cell membrane now it's really critical that you don't call this the cell wall as that's not correct within the cell membrane we've got the cytoplasm we're going to look at the functions of both the cell membrane and the cytoplasm in later videos I'm showing you here a picture of a bacterial cell now unlike animals and plants bacteria are procaryotes in procaryotic cells the genetic material feels not enclosed in a nucleus and again that's a key definition that you need to learn the second key fact is that procaryotic cells are much smaller than eukariotic cells so I'm showing you here a drawing of a bacterial cell now as I said before procaryotic cells such as bacteria do not have a nucleus their genetic material consists of a single Loop of DNA bacteria may also have small rings of DNA which are called plasmids procaryotic cells have a cell membrane but they've also got a cell wall now it's important to remember that this is a bacterial cell wall don't get confused with the plan cell wall which we're going to look at in a later video finally procaryotic cells also contain cytoplasm remember that you'll find plenty of questions on eukariotic and procaryotic cells in my vision workbook and you can get that by clicking on the link above okay so hopefully now you should be able to describe the differences and the similarities between ukar cells and procaryotic cells [Music]