<p>Biology 12- Transport Across Membranes</p><p>Hypertonic, Isotonic, Hypotonic</p><p>• Water molecules travel freely through protein channels to try to maintain an environmental ______.</p><p>• Osmotic pressure is a measure of the ______water molecules make with the cell membrane surface.</p><p>• If there is a ______between the inside and outside of the cell there will be a ______… more collisions as water tries to get across the membrane</p><p>• ______is the force the cytoplasm exerts against the inside of the cell membrane.</p><p>• Large and prolonged changes in turgidity can have effects on cell function.</p><p>• What the solution concentration outside the cell looks like has effect on the cells turgor pressure.</p><p>Isotonic</p><p>• If the cell is placed in a solution that has ______to inside the cell the solution is called isotonic </p><p>• The cell will ______because the osmotic pressure on each side of the cell membrane is equal</p><p>• The ______of solute on both sides of the membrane are equal</p><p>Hypertonic</p><p>• When a cell is exposed to an environment with a ______, water will ______to try to bring the inside and the outside solutions into equilibrium. </p><p>• The cell will ______as water leaves and the solute inside the cell will concentrate so that it is more similar to the concentration outside the cell. </p><p>• The outside solution is called hypertonic (hyper=high). It has a higher concentration of solute than the cytoplasm. • The shrinking of a cell in a hypertonic solution is called ______. If it is a red blood cell it is called ______.</p><p>Hypotonic</p><p>• When a cell is placed in a solution that has a ______of solute compared to the cell cytoplasm it is called ______(hypo=low)</p><p>• Water moves from ______the cell to try to lower the solute concentration inside the cell</p><p>• The cell ______and may even burst if the osmotic pressure is great enough. </p><p>• When a red blood cell bursts it is called ______</p><p>Hypertonic Isotonic Hypotonic</p>