00:01
Today we are wanting to go over and label the structures of plant and animal cells.
00:04
So let's first start with the structures that plant and animal cells share.
00:08
So the first thing that they share is a plasma or cell membrane, which controls the movement in and out of the cell, and it is a semi -permeable phospholipid bi layer.
00:20
Additionally, we have the cytoplasm, which is the site of many metabolic reactions.
00:25
It is the gel -like matrix that holds organelles and the organelles float in within the cell.
00:30
Today we are wanting to...
00:31
The next two organelles are the nucleus and nucleolus.
00:35
The nucleus contains dna and control cellular activities.
00:39
It is surrounded by a double membrane with pores for molecular transport.
00:44
The nucleolus produces ribosomes.
00:46
It is a dense region inside the nucleus rich in rna and proteins.
00:50
Today we are wanting...
00:52
Next we have the ribosomes, which are where protein synthesis occurs.
00:57
They are small and numerous and can float free or attach...
01:00
To the rough endoplasmic reticulum, or er.
01:04
The rough er is where proteins are synthesized for export.
01:09
It is covered in ribosomes and connected to the nuclear envelope...