Warm up
Type of
Transport
Diffusion
Osmosis
Facilitated
Diffusion
What moves?
Solute or
Solvent
It moves towards
an area of higher
or lower
concentration?
Moves Down or
up the
concentration
gradient?
Does it require
Energy?
Warm up
Type of
Transport
What moves?
Solute or
Solvent
Diffusion
Moves Down or
up the
concentration
gradient?
Solute
To Lower
Concentration
Down the
Concentration
Gradient
Solvent
To Higher
Concentration
Up the
Concentration
Gradient
Solute
To Lower
Concentration
Down the
Concentration
Gradient
Osmosis
Facilitated
Diffusion
It moves towards
an area of higher
or lower
concentration?
Does it require
Energy?
NO ENERGY
Required
NO ENERGY
Required
NO ENERGY
Required
ACTIVE TRANSPORT
Chapter 5
pg. 103-106
Active Transport
• Requires energy!
• Molecules move from
an area of low
concentration to an
area of high
concentration
• Move against the
concentration gradient
1. Membrane pumps
1. Membrane pumps
• Pumps – Transport proteins that use energy
– (low  high)
• Protein transfers the molecule to the other side.
• Sodium-Potassium Pump: transports Na+ and K+
against (not down) gradient
2. Endocytosis
• Bring large molecules
into cell
1. Material is engulfed by
cell membrane.
2. Membrane makes a
pouch.
3. Pouch then pinches off
and makes a vesicle.
4. Vesicle binds with
lysosome.
2. Endocytosis
• Phagocytosis: A form of endocytosis in which
immune cells attack and kill bacteria
3. Exocytosis
• Moving large particles out of the cell (the
reverse of endocytosis)
Draw This
1. Finish Grape Lab
2. Finish “Transport Review”
DUE MONDAY
• Grape Lab
• Transport Review
• Cell Chosen Chart (on model directions)