Active Transport 1. Often against a concentration gradient B. Osmosis and Osmotic Pressure 1. It is implied that solutions with the highest water content have the lowest solute concentration 2. Osmotic Pressure a. Measured in osmolarity 1.
Membranes are selectively permeable a.
Therefore only molecules which do not freely cross the membrane contribute to the osmotic pressure 2. Blood plasma 2. Normal saline c. Dependent on body style a. Intraocular fluid 2.