1. Carrier-Mediated Transport Pore Cell Solute

2. What stops a cell from filling up with solutes?  Ion gradients act continually on cells so what must the cell do to maintain homeostasis?  The cell has pumps that push ions out of the cell to maintain homeostasis  Pumps that use ATP(energy) to work are called ACTIVE  Pumps or pores that work without ATP(energy) are called PASSIVE

3. Most important Pumps  Sodium-potassium pumps(Na-K): this pump burns one ATP to push 3 Na + out of cell and 2 K + into the cell  Sodium-glucose transport protein(SGLT): binds Na + and glucose outside of cell. Uses ATP and Na + gradient to push glucose into cell  ATP synthetase: As Na + enters the cell ATP is made from ADP and P +