The phospholipids. The lipid tails are attracted to each other and the phosphate ends are attracted to the polar molecules of water,both inside&outside the cell
25
What are two ways large molecules brought into the cell?
Pinocytosis(very large such as proteins) and carrier proteins (large such as carbohydrates)
25
Give an example of passive transport
water and Na+ traveling through channel proteins from high to low concentration.Lipids which are non polar can pass right through the lipid membrane
15
What is active transport?
When something requires energy to move into the cell.
15
What do glycoproteins do?
The act as markers to identify the cells to recognize each other, ie: foreign cells, or as receptors to receive messages