Cells and Cellular Transport Webquest
Name________________________________Block_________
Objective: The purpose of this assignment is to review the structures in plant and animals cells and
see how cells maintain homeostasis through passive and active transport.
Cell Membrane Structure
1. Type in the web address http://www.susanahalpine.com/anim/Life/memb.htm
2. View the animation using the grey arrow on the bottom right.
Passive Transport
1. Type in the web address
http://www.northland.cc.mn.us/biology/BIOLOGY1111/animations/passive1.swf
2. View the animation by using the yellow bar on the bottom and answer the follow question sfor
each part
Passive Transport
What is passive transport?
Why is it important that the membrane is fluid?
Simple Diffusion
What is the end result of diffusion?
Facilitated Diffusion
What is used to facilitate (help) molecule movement across the membrane?
Osmosis
How is osmosis different that diffusion?
Why can water get through the membrane?
Active Transport
1. Type in the web address
http://www.wiley.com/legacy/college/boyer/0470003790/animations/membrane_t
ransport/membrane_transport.htm
2. Click on the green shape that says active transport.
3. Answer the questions below.
Why is the Na+/K+ ion pump an example of active transport?
Describe one important example of active transport in your body.
Analysis
1.
Compare and contrast active and passive transport? (use a Venn diagram is you like)
2.
Why does the cell need to use both types of transport?
3.
What molecule characteristics affect how it is transported into the cell?
4.
Predict what type of transport would be used for the following molecules:
Molecule Type of Transport
water
Ca+
glucose
O2