cell transport

Question 1

4 roles of the cell plasma membrane

Answer 1

1. seperates cell contents from the outside enviroment
2. regulates the transport of nutrients in and out of the cell
3. receptor sites
4. recognition

Question 2

roles of internal membranes

Answer 2

• seperates cell contents
• holds the components
• chemical reactions

Question 3

define the **fluid mosaic model **

Answer 3

fluid- phospholipid molecules move each other within a layer relative to eachother
mosaic- proteins embedded between the phopholipids vary in shape and pattern

Question 4

name the 6 components in the cell membrane

Answer 4

1. phospholipids
2. intrinsic protein
3. extrinisc protein
4. cholestrol
5. glycoproteins
6. glycolipid