Transport

tries to balance the ratio

high –> low solutes move

low –> high (solutes) high –> low (water) water moves 3 types of solutions

high –> low solutes move membrane proteins are required

low –> high solutes move energy is required membrane proteins are required

• hypotonic • isotonic • hypertonic

• less soluted in cell, more soluted in solution • more water in cell, less water in solution • water leaves the cell, resulting with it having less mass than it started with

• same amount of water and solutes in a cell and outside of it • no change in mass • water is always moving in and out so there’s a slight, but not noticeable change

• more solutes in cell, less outside • less water in cell, more on outside • water goes into the cell • results in an increase in mass