Instructions for 9-22-14 Cell Transport Activity

Follow the instructions on your handout and use the following links.  Click on the link to visit it.

SODIUM-POTASSIUM PUMP - AN EXAMPLE OF ACTIVE TRANSPORT

FACILITATED DIFFUSION ANIMATION

SIMPLE DIFFUSION ANIMATION

1.  Draw each type of animation in your notebook and label it.  Make sure to include all 3:   Simple diffusion, facilitated diffusion, and active transport, and make sure to label each.

2.  Describe the characteristics of each type of transport for the following topics:

-Direction of movement (down the concentration gradient from more to less OR up the concentration gradient from less to more)

-Does it require a protein channel or not

-Types of molecules that would use it - based on size and polarity  (Example:  small, nonpolar molecules would use this type of transport).

-Does it require energy expenditure by the cell or not?

3.  Answer Question 4 from Friday's activity.