Transcript Facilitated diffusion with aquaporins

Transport
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Carrier proteins
like this one are
integral
______________
proteins.
Integral
peripheral
Carbon dioxide and oxygen move
across membranes in cells by
diffusion
_________________
Kind of endocytosis used to take
in large particles or whole cells.
phagocytosis
Putting a plant cell in a HYPOTONIC
solution will cause a(n) ____________
increase
increase
decrease
in osmotic pressure when water
enters the cell.
This diagram represents a
animal cell in a
_______________
hypertonic solution.
shrink
It will probably ________________
shrink
swell & burst
stay the same size
crenation
This process is called _________________
Kind of transport used by glucose
to move across cell membranes
Facilitated diffusion with a carrier
Kind of transport that can move
sodium and potassium ions
AGAINST the concentration
gradient fast
Sodium-potassium pump
When you sit in the
bathtub, your fingers
get wrinkly because
of the water entering
your skin cells. The
bathtub water is a
____________
hypotonic
solution compared to
your skin cells
Hypotonic
isotonic
hypertonic
This type of transport
is called
endocytosis
_______________
http://academic.brooklyn.cuny.edu/biology/bio4fv/page/cell-movement.html
Diffusion continues
until the concentration
of molecules is equal
throughout the space.
This is called
equilibrium
___________________
ACTIVE transport can move
____________
molecules AGAINST the
concentration gradient.
Active
Passive
When you mix iodine
starch
with ____________
you will see a
black/purple
color change.
This diagram represents an
animal cell in a
_______________
hypotonic solution.
swell & burst
It will probably ________________
shrink
swell & burst
stay the same size
cytolysis
This process is called _________________
AQUAPORINS are membrane
________________
proteins that help water molecules
move across cell membranes
The difference in the concentration
of molecules across a space is called a
___________________
Concentration gradient
Passive transport does
___________
NOT require energy to move
molecules.
Kind of transport used by ions like
Ca+ + , Cl - , Na+ , and K + to
move across cell membranes
Facilitated diffusion with Ion channels
(Na+ and K + can also move
by the Na+ - K + pump)
Give some examples
of membrane proteins
that help move
molecules across
cell membranes
Carriers, ion channels, aquaporins, pumps
H+ ions move across cell membranes using
__________
proton pumps
Name a kind of transport that uses
membrane proteins to help
molecules move across membranes
Facilitated diffusion with carriers,
Facilitated diffusion with ion channels,
Facilitated diffusion with aquaporins
(osmosis)
Na+-K+ pump
proton pump
A membrane that
lets certain
molecules pass
through and not
others is called
_______________
Semi permeable OR
selectively permeable
Image from:
http://www.d.umn.edu/~sdowning/Membranes/membraneImages/jpegimages/diffusionmedium.jpg
Name a kind of transport that uses
vesicles to move substances across
a membrane
Pinocytosis, phagocytosis,
Exocytosis, endocytosis
Name the kind of transport that
moves WATER across cell membranes
OSMOSIS
(Facilitated diffusion with aquaporins)
A freshwater fish has
about 1% salt in his
body. Freshwater is
close to 0% salt.
Will water move into
or out of this kind of
fish?
More solute
molecules inside
the fish’s cells
than in the
freshwater.
(HYPOTONIC)
Water will move
INTO the fish
http://www.lionden.com/cell_animations.htm
Which organelle
makes the ATP
used to run the
Na + -K+ pump?
mitochondria
Type of endocytosis in which cells
take in small molecules or fluids
pinocytosis
The white circles stand
for oxygen molecules.
Use what you know
about diffusion of
molecules to predict
which way the oxygen
will move.
From the lungs into the blood
(Move from a High concentration to low concentration)
The shrinking away of the cell membrane from the cell
wall in a plant cell when placed in a HYPERTONIC
environment
plasmolysis
An INTEGRAL MEMBRANE PROTEIN
that moves molecules PASSIVELY across cell
membranes by attaching, CHANGING
SHAPE, and flipping to the other side like a
revolving door
carrier protein
http://bio.winona.edu/berg/ANIMTNS/facdifan.gif
http://www.estrellamountain.edu/faculty/farabee/biobk/BioBooktransp.html
The type of transport that
moves substances OUT
of cells is called
exocytosis
______________
The energy for active transport
comes from this molecule
ATP
Kind of membrane protein used
by H+ ions to cross membranes
Proton pump
Kind of membrane protein that
moves Ca++ or Cl- across
membranes
Ion channels
This diagram
represents an animal
cell in a ___________
isotonic
solution.
It will probably
__________________
stay the same size
Undergo cytolysis
Undergo plasmolysis
stay the same size
http://bio.winona.edu/berg/ANIMTNS/voltgate.htm
An INTEGRAL MEMBRANE PROTEIN that
Provides a passageway/tunnel across the cell
membrane through which IONS can diffuse
PASSIVELY
ion channel
Tell if the transport is ACTIVE or PASSIVE
PASSIVE
Facilitated diffusion ___________________
PASSIVE
Osmosis ____________________
Na + - K+ pump ____________________
ACTIVE
Diffusion ____________________
PASSIVE
Endocytosis _______________________
ACTIVE
ACTIVE
Exocytosis ________________________
PASSIVE
Ion channels ________________________
ACTIVE
Proton pump _______________________
This diagram represents an
plant cell in a
_______________
hypotonic solution.
The osmotic pressure in this cell will
increase
_______________
increase
decrease
Tell if the transport uses
Vesicles membrane proteins
Needs NO HELP
membrane protein
Facilitated diffusion ___________________
Membrane protein (aquaporins)
Osmosis ____________________
Na + - K+ pump ____________________
membrane protein
Diffusion ____________________
Needs no help
Vesicle
Endocytosis _______________________
vesicle
Exocytosis ________________________
membrane protein
Ion channels ________________________
membrane protein
Proton pump _________________
Name a molecule that moves across membranes
using the kind of transport shown below
glucose
http://bio.winona.edu/berg/ANIMTNS/facdifan.gif
Hydrogen ions can also be called
protons
______________
In animal cells:
swelling and bursting =________________
cytolysis
shrinking = ____________________
crenation
In plant cells:
shrinking away from
cell wall = ____________________
plasmolysis
What keeps plant cells from undergoing
cytolysis? _____________
Cell wall keeps it from bursting
This diagram represents a
plant cell in a
_______________
hypertonic solution.
The cell membrane will
probably ________________
shrink away from the cell wall
shrink away from the cell wall
swell & burst
stay the same size
The osmotic pressure in this cell will
decrease
________________
increase
decrease
plasmolysis
This process is called _________________
Match the picture with the kind of transport
FACILITATED
DIFFUSION with
carrier proteins
http://bio.winona.edu/berg/ANIMTNS/facdifan.gif
DIFFUSION
Match the picture with the kind of transport
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBooktransp.html
EXOCYTOSIS
INSIDE
CELL
OUTSIDE
CELL
Substance is put in a
vesicle and transported
up to the cell membrane
and released OUTSIDE
Name an organelle that uses this
kind of transport Golgi Bodies
Match the picture with the kind of transport
http://www.lionden.com/cell_animations.htm
Na+ - K + pump
Name a substance that in transported
in this way
+
+
Na
or
K
Match the picture with the kind of transport
http://academic.brooklyn.cuny.edu/biology/bio4fv/page/endocytb.htm
ENDOCYTOSIS
Substance is transported
INTO cell inside a vesicle
If these green/blue dots represent small
molecule or fluids this would be called
__________________
PINOCYTOSIS
Kind of membrane protein used
by glucose to move across cell
membranes
Carrier protein
Kind of membrane protein that
moves water across membranes
Aquaporin (channel)
Putting plant cells into a
HYPERTONIC solution will cause water to
____________________________________
Leave cell
enter cell
leave cell
decrease in
This will cause a(n) ___________
turgor pressure.
Putting plant cells into a
HYPOTONIC solution will cause water to
____________________________________
Enter cell
enter cell
leave cell
increase in
This will cause a(n) ___________
turgor pressure.
Ocean water has a greater
concentration of dissolved
solutes than the organisms
that live there so ocea
fish live in a HYPER
_______tonic
environment.
Will water move into or
out of this kind of fish?
More solute
molecules outside
the fish’s cells
than in.
Water will move
leave the fish
Match the picture with the kind of transport
http://academic.brooklyn.cuny.edu/biology/bio4fv/page/cell-movement.html
ENDOCYTOSIS
Substance is transported
INTO cell inside a vesicle
If the green square represents a large
molecule or a whole cell
this would be called __________________
PHAGOCYTOSIS
Tell the kind of transport used by each
Facilitated diffusion
Glucose ___________________
with carrier proteins
Oxygen & carbon dioxide _______________
diffusion
+
Na and
K+
+ – K+ pump
Na
ions ____________________
Facilitated diffusion
Na +, K+ Cl -, & Ca ++ ions_______________
with Ion channels
diffusion with aquaporins
Water Facilitated
_______________________
(osmosis)
Proton pumps
H+ ions _______________________
Match the picture with the kind of transport
An INTEGRAL MEMBRANE PROTEIN provides a
passageway/tunnel across the cell membrane through
which WATER molecules can diffuse PASSIVELY
OSMOSIS
http://www.spps.kvl.dk/news/0507/Lund4.jpg
Facilitated
diffusion with
aquaporins
Tell the kind of transport used by cells
To take in large molecules
Phagocytosis
& whole cells ___________________________
To take in small molecules
Pinocytosis
& fluid
_____________________________
Used by Golgi to transport
Exocytosis
molecules OUT of cell ___________________________
Used by white blood cells to
Phagocytosis
engulf and destroy bacteria _____________________
The pressure of water pushing against
the cell wall in a plant cell is called
________________
pressure.
osmotic
LABEL THE DIAGRAMS;
HYPERTONIC
ISOTONIC
HYPOTONIC
Facilitated diffusion using aquaporins is also
called ______________
osmosis
Healthy cells work to “maintain stable
internal conditions” also called
homeostasis If this doesn’t happen, cells
____________.
can be damaged.
(That is what happens when cells shrink or
swell in hypotonic or hypertonic solutions.)
Match the picture with the kind of transport
A MEMBRANE PROTEIN that uses energy to
ACTIVELY transport hydrogen ions (H+)
across a cell membrane
Proton
pump
HOW are pumps different from facilitated
diffusion carriers and channels?
Pumps require energy (active transport)
and carriers and channels don’t need
energy (passive transport)
Pumps move against the gradient (low →high)
Carriers/channels move with the gradient
(high → low)