Learning Objectives
1. Explain the fundamentals of atomic structures and define a bond.
2. Explain the main function of a cell’s plasma membrane.
3. Describe the functions of phospholipids & transport proteins in the plasma membrane.
4. Identify the hydrophobic & hydrophilic regions of the phospholipid bilayer. ***
5. List the kinds of molecules that can & cannot diffuse across the membrane. ***
6. Use the chemical properties of a molecule (hydrophobic, hydrophilic, polar, nonpolar, charged) to determine whether or not it could diffuse across the membrane. ***
| Molecule | Diffuse |
|---|---|
| Hydrophobic | simple |
| Nonpolar | simple |
| Charged | faciliated |
| Hydrophilic | facilitated |
| Polar | facilitated |
| Large | facilitated |
7. Explain what a concentration gradient is. ***
8. Use the direction of a concentration gradient to determine which way a molecule would move (into or out of a cell). ***
9. Explain how passive transport is different from active transport.
10.Explain why active transport is important to a cell.
11.Identify similarities & differences between these transport processes: diffusion, facilitated diffusion, osmosis, primary active transport, secondary active transport. ***