Download KEY Cell Membrane Images

KEY
Cell Membrane Images
Instructions: For each image, determine an
appropriate title and a description for what is
happening in each.
1. Title: Diffusion
• A form of passive transport
• Net movement of molecules/ions
toward regions where their
concentrations are lower
• High à Low
2. Title: Osmosis
• Higher water potential
• Lower water potential
• Lower solute concentration
• Higher solute concentration
Title: _______________________________________________
•
•
Membrane is impermeable to solute.
Net movement of water is from high water potential to low water potential.
3. Title: Osmosis
Crenation
ANIMAL
PLANT
_________________________________________________________________________
HYPOTONIC
Solution
ISOTONIC
Solution
HYPERTONIC
Solution
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_________________________________________________________________________
Net movement of water NO net movement
Net movement of
is from high to low
of water.
water is from high to
_________________________________________________________________________
water potential and
low water potential
therefore INTO the
and therefore OUT
_________________________________________________________________________
cell.
of the cell.
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4. Title: Facilitated diffusion
ION CHANNEL
FACILITATED DIFFUSION
Transport of ions across a
membrane in the direction of
lower concentration of those
ions.
High à Low
Molecules bind to a carrier protein on
the extracellular side of the cell
and pass through the plasma membrane
by way of a conformational change in
the carrier protein.
High à Low
5. Title: Active Transport
Movement of certain substances across the plasma membrane by
ATP-powered transport proteins. These proteins can transport
______________________________________________________________________________
substances against their concentration gradients.
______________________________________________________________________________
2 K in: 3 Na out
______________________________________________________________________________
+
+
Sodium-Potassium Pump
6. Title: Endocytosis/Exocytosis
Endocytosis
Process by which a cell surrounds
and engulfs substances; portions
of the plasma membrane turn
inward and fuse, trapping a
volume of extracellular liquid and
its contents within a vesicle
Exocytosis
A vesicle merges with the plasma
membrane and discharges its
contents to the exterior
7. Title: Osmosis
Solvent (H2O)
Solute (ex:urea)
Semipermeable membrane
______________________________________________________________________________
This is a U-tube osmometer.
There will be a net movement of water is from
high water potential to low water potential.
______________________________________________________________________________
______________________________________________________________________________
8. Title: Phagocytosis
______________________________________________________________________________
Phagocytosis is “cell-eating” or endocytosis of solid particles.
______________________________________________________________________________
This is a picture of an Amoeba eating a Chlamydomonas. Both the
______________________________________________________________________________
Amoeba and Chlamydomonas are protists.