Assignment:
1.-What is endocytosis? Please give an example.
2.- What happens to a red blood cells if they are exposed to an hypertonic environment? Why ?
3.- What is the difference between passive and a active transport? Please give examples.
4.- What is a plasmodesmata?
5.- Membranes are ___________ because they let some, but not all, substances pass.
6.- What is pinocytosis ?
7.- What is a cotransport system ? Why is important?