YOU ARE LEARNING:
The Cell Wall
The Cell Wall
The cell wall protects the cell.
Not all types of cells have a cell wall
Have a look at the image. Only ______________ and ______________ have cells walls.
You can select multiple answers
Where is the cell wall in plant cells and bacteria?
So the cell wall surrounds the outside of plant cells and bacteria
Animal cells don't have cell walls.
Why do plant cells and bacteria have cell walls? What is the cell wall's function?
So the cell wall has to be strong! What do you think it's made of?
Animal cells don't have a cell wall
Cell walls protect cells, but there is also a drawback to having a cell wall. Which one do you think that is?
Cell walls make transport in and out of the cell more difficult
Plant cells, for example, still need cell walls though, because they have to be quite robust to be able to make sure that the plant can always grow towards the light.
Animal cells don't have to grow towards the light, so they'd rather not have the cell wall and have easier transport through the cell membrane instead.
Summary!
Only plant cells and bacteria have cell walls
The cell wall sits around the outside of the cell where it protects the cell.
The cell wall is made of cellulose
Cellulose makes the cell wall very robust which means that plant cells for example are strong enough to be able to always grow towards the light.
Animal cells don't have cell walls
Animal cells don't have to be as robust as for example plant cells, so they would rather have easier transport through the cell membrane.