5 Written Questions

1. Only an exact molecule can pass through it's protein
2. When many phospholipids are grouped together in water, they find pairs so they can push their hydrophobic tails together and orients their polar head toward the outside. When a layer forms it is called a phospholipid bilayer.
3. the pressure that must be applied to stop the osmotic movement of water across a membrane
4. when two solutions have the same osmotic concentration
5. hydrostatic pressure in a plant cell pushing the plasma membrane against the cell wall making the cell rigid

5 Matching Questions

1. Hyperosmotic
2. Solvent
3. Antiport
4. Solutes
5. Facilitated Diffusion

1. a what Na+ and another substance bind to (on either end) then are exchanged
2. b the process where solutes move from highest to lowest concentration gradient but do so with the help of carriers
3. c water
4. d when one solution has a higher concentration of the solution, (a higher osmotic concentration)
5. e things that dissolve in water

5 Multiple Choice Questions

1. proteins in the phospholipid bilayer that float around and provide passageways. THEY FLOAT. there is a variety in the membrane. they differ in the way that they traverse (float)
   1. Transmembrane Proteins
   2. Aquaporins
   3. Plasma Membrane
   4. Countertransport
2. when molecules move from where their concentration is high to where it is low
   1. Solutes
   2. Diffusion
   3. isosmotic
   4. osmosis
3. net water movement across a membrane toward a higher solute concentration by diffusion
   1. osmosis
   2. isosmotic
   3. Exocytosis
   4. Solutes
4. the solution with the lower osmotic concentration
   1. hypoosmotic
   2. osmosis
   3. Hyperosmotic
   4. isosmotic
5. delicate skin of liquids with embedded protein molecules (allows non-water soluble substances to pass in and out of the cell)
   1. Solvent
   2. Carriers
   3. Plasma Membrane
   4. Aquaporins

5 True/False Questions

1. Receptor Medicated Endoctosis → the material the cell takes in is liquid

   True        False

2. Sodium-Potassium Pump → net water movement across a membrane toward a higher solute concentration by diffusion

   True        False

3. Endocytosis → discharge of material from vesicles of the cell surface

   True        False

4. Aquaporins → what Na+ and another substance bind to (on either end) then are exchanged

   True        False

5. Pinocytosis → when the plasma membrane envelopes food particles.

   True        False