Toepel biology quiz study guide.

1. Toepel Quiz Study Guide
Osmosis, Diffusion, Cell Membrane

2. Cell Membrane
1. The cell membrane is made up of a _________ bilayer.
Phospholipid
2. The heads of the phospholipids are _________ therefore they are
Polar
locater closest to the watery inside and outside of the cell.
3. The _________ proteins extend from the outside to the inside of the
Integral
cell and are used for transporting materials in and out of the cell by
forming channels and pumps.
4. This type of macromolecule is found on the cell membrane’s surface
and serves as a chemical ID card for the cell. _________
Protein
5. A type of lipid, Carbohydrate is embedded in the membrane of the cell
_________
to prevent fatty acid tails from sticking together.
6. Most larger non-polar and polar substances cannot cross the cell. This
life-essential molecule is an exception to the rule. Cholesterol
_________
7. The _________ proteins do not extend all the way through the
Peripheral
membrane and usually just attach to the integral proteins temporarily
(used as receptors or places where cytoskeleton can attach to).

3. Cell Membrane Continued…

4. Diffusion
1. Diffusion: The process of the movement of a
solute from areas of high concentration to
areas of low concentration.
Example: End Resut
Dirty Air Semi-Dirty Air
Clean Air

5. Osmosis
• Osmosis: Movement of water from hypotonic
solution to hypertonic solution.
Example: End Resut
75% Salt 50% Salt
10% Salt

6. Questions
10% Salt 10% Salt 75% Salt
75% Salt 10% Salt 10% Salt
Inside is ___________
Hypertonic Inside is ___________
Isotonic Inside is ___________
Hypotonic
Outside is ___________
Hypotonic Outside is ___________
Isotonic Outside is ___________
Hypertonic
In
Water will move ______ In/Out
Water will move ______ Out
Water will move ______

7. Continued…
Isotonic Solution
Hypotonic Solution Hypertonic Solution

8. Good Luck on
the Quiz!!! 