Download Passive and Active Transport.notebook

Passive and Active Transport.notebook
January 03, 2011
Cell Membrane
Discuss:
Phospholipid bilayer
Hydrophilic heads
Hydrophobic tails
Semi-permeability
Jan 3­7:13 AM
Learning Goals:
1. Understand the difference between passive and active
transport.
2. Understand how to calculate concentration gradient and
equilibrium point.
3. Know how to determine which way molecules will move,
what that will do to the size of the cell and relate that to
they type of solution the cell is in.
Jan 3­7:12 AM
1
Passive and Active Transport.notebook
January 03, 2011
Passive vs. Active Transport
* Passive Transport: The cell does no work, molecules can
diffuse (pass) along the concentration gradient through the
semipermeable membrane either through the phospholipid
bilayer or through open protein channels.
Passive_Transport.asf
http://www.brainpop.com/science/cellularlifeandgenetics/passivetransport/
* Active Transport: The cell must do work (by using ATP), the
cell uses energy to pump molecules against the concentration
gradient by using protein pumps.
Active_Transport.asf
http://www.brainpop.com/science/cellularlifeandgenetics/activetransport/
Jan 3­7:14 AM
Passive Transport Problems
Molecular Movement Reading Guide
Homework due Tuesday!!
Jan 3­7:19 AM
2
Passive and Active Transport.notebook
January 03, 2011
WHATCHALEARNIN’
1. Compare and contrast active vs.
passive transport.
Include as much as possible! You
may write about it, make a chart, venn
diagram...
2. How are active and passive transport
related to homeostasis?
Oct 20­7:19 AM
3