How do molecules move in and out of our cells?
Introduction
You will be:
• Reviewing Cell
Basics if needed.
• Learning about
diffusion.
• Learning about
osmosis.
• Taking quizzes to
make sure you know
your stuff!
This button will take
you through to the next
set of information!
JUST CLICK!
This button will take
you through to the next
Quiz Question!
JUST CLICK!
Multiple Choice
answers on Quizzes
are set in buttons.
JUST CLICK your
answer-choice!
Quiz 1: Question #1/3
All living things are composed of at least
one ______________.
A) DNA molecule
B) Cell
C) Organ System
D) I don’t know…
Quiz 1: Question #1/3
Next
Question
All living things are composed of at least
one ______________.
A) DNA molecule
B) Cell
C) Organ System
D) I don’t know…
Great Job!
Let’s move on
to the
Next Question!
Quiz 1: Question #1/3
Some
Review
All living things are composed of at least
one ______________.
A) DNA molecule
B) Cell
C) Organ System
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 1: Question #1/3
Some
Review
All living things are composed of at least
one ______________.
A) DNA molecule
B) Cell
C) Organ System
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 1: Question #1/3
Some
Review
All living things are composed of at least
one ______________.
No Problem…
A) DNA molecule
B) Cell
C) Organ System
D) I don’t know…
Let’s Review
Again!
Quiz 1: Question #2/3
Which process keeps the internal
conditions of cells stable and
consistent?
A) Metabolism
B) Photosynthesis
C) Homeostasis
D) I don’t know…
Quiz 1: Question #2/3
Next
Question
Which process keeps the internal
conditions of cells stable and
consistent?
A) Metabolism
B) Photosynthesis
C) Homeostasis
D) I don’t know…
Great Job!
Let’s move on
to the
Next Question!
Quiz 1: Question #2/3
Some
Review
Which process keeps the internal
conditions of cells stable and
consistent?
A) Metabolism
B) Photosynthesis
C) Homeostasis
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 1: Question #2/3
Some
Review
Which process keeps the internal
conditions of cells stable and
consistent?
Sorry, that’s not
A) Metabolism
B) Photosynthesis
C) Homeostasis
D) I don’t know…
correct…
Let’s Review
Again!
Quiz 1: Question #2/3
Some
Review
Which process keeps the internal
conditions of cells stable and
consistent?
No Problem…
A) Metabolism
B) Photosynthesis
C) Homeostasis
D) I don’t know…
Let’s Review
Again!
Quiz 1: Question #3/3
(True or False)
Cells Membranes are an outer barrier,
which control what moves into and out
of a cell.
A) True
B) False
Quiz 1: Question #3/3
Continue
Learning
(True or False)
Cells Membranes are an outer barrier,
which control what moves into and out
of a cell.
A) True
B) False
Great Job!
Let’s move on
to Diffusion!
Quiz 1: Question #3/3
Some
Review
(True or False)
Cells Membranes are an outer barrier,
which control what moves into and out
of a cell.
Sorry, that’s not
A) True
B) False
correct…
Let’s Review
Again!
REVIEW:
What are cells?
Remember that…
• All living things are made of cells.
• Cells are always experiencing
changing environments!
• Outside Change  Inside Change
• Cells need to maintain balance….
Continue
Learning
REVIEW:
Continue
Learning
What is homeostasis?
• Homeostasis is the process of keeping the
inside of cells stable and healthy…
OUTSIDE
INSIDE
OUTSIDE
Regardless of the craziness going on around
the cell!
Re-Take
Quiz
Outside
Inside
REVIEW:
Cell Structure & Function
Continue
Learning
Cells are mini-factories…
They have all of these parts inside that work
together!
And they have gates on the outside to secure
Continue
Learning
Control
Center
Security Gate
&
Traffic Control
Workers
REVIEW:
Cell Membranes
Continue
Learning
• REMEMBER:
– Cell Membranes are the outer covering of cells.
– Cell Membranes are semi-permeable… only some
things can enter and leave!
– Cell Membranes are a made of 2 lipid layers with
channels!
DIFFUSION:
Introduction (0/5)
Continue
Learning
Watch the animation below.
Questions to Think About:
1. What do you think the dots represent?
2. How many dots start in the corner, compared to the rest of
the box?
3. How do the dots move? Which direction?
4. What is the end result?
DIFFUSION:
Equilibrium (1/5)
Continue
Learning
Re-Take
Quiz
• Particles (Molecules and Atoms) need to be
balanced out…
“Balance” = Equilibrium
DIFFUSION:
Definition (2/5)
Continue
Learning
Re-Take
Quiz
• Diffusion is the movement of particles from HIGH
to LOW concentration, ultimately reaching
equilibrium (without the use of ENERGY)!
BALANCED
Particles are claustrophobic, they like to be spread out and have their
own equal spaces!
DIFFUSION:
Animation (3/5)
Continue
Learning
Re-Take
Quiz
Watch this animation again!
Remember to Think About:
1. What do you think the dots represent?
2. How many dots start in the corner, compared to the rest of
the box?
3. How do the dots move? Which direction?
4. What is the end result?
The
dots/particles
move
from
The
The
There
dots/particles
dotsare
areway
particles
are
more
evenly
an
areaout
withand
MORE
(High
spread
dots/particles
(molecules
or balanced
in
atoms).
the
one(in
Concentration),
an rest
areaof
with
corner,
Equilibrium)!
thantothe
LESS (Lower
theConcentration)!
box!
DIFFUSION:
Example (4/5)
Diffusion of Dye
particles/molecules:
Continue
Learning
Re-Take
Quiz
• Dye particles all start
on top of water….HIGH
Concentration!
• Dye particles need to
be balanced…
• Dye particles move to
areas with LOWER
Concentration (fewer
particles)
• Dye particles reach
EQUILIBRIUM!
DIFFUSION:
Start the
Quiz
Re-Take
Quiz
Example (4/5)
Start: There are tons of
particles outside the
cell, and none on the
inside!
End: The number of particles
on the inside & outside of
the cell is balanced!
EQUILIBRIUM!
Particles move across the Cell
Membrane from HIGH to
LOW concentration!
Quiz 2: Question #1/5
____________ is the state in which there is balance,
and any particles/molecules are evenly spread out.
A) Diffusion
B) Equilibrium
C) Isotropy
D) I don’t know…
Quiz 2: Question #1/5
Next
Question
____________ is the state in which there is balance,
and any particles/molecules are evenly spread out.
A) Diffusion
B) Equilibrium
C) Isotropy
D) I don’t know…
Great Job!
Let’s move on
to the
Next Question!
Quiz 2: Question #1/5
Some
Review
____________ is the state in which there is balance,
and any particles/molecules are evenly spread out.
A) Diffusion
B) Equilibrium
C) Isotropy
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #1/5
Some
Review
____________ is the state in which there is balance,
and any particles/molecules are evenly spread out.
A) Diffusion
B) Equilibrium
C) Isotropy
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #1/5
Some
Review
____________ is the state in which there is balance,
and any particles/molecules are evenly spread out.
A) Diffusion
B) Equilibrium
C) Isotropy
D) I don’t know…
No Problem…
Let’s Review
Again!
Quiz 2: Question #2/5
What is diffusion?...
A) The movement of particles from HIGH to LOW
concentration to reach equilibrium.
B) The movement of particles from LOW to HIGH
concentration to reach equilibrium.
C) A process which requires energy.
D) I don’t know…
Quiz 2: Question #2/5
Next
Question
What is diffusion?...
A) The movement of particles from HIGH to
LOW concentration to reach equilibrium.
B) The movement of particles from LOW to HIGH
concentration to reach equilibrium.
C) A process which requires energy.
D) I don’t know…
Great Job!
Let’s move on
to the
Next Question!
Quiz 2: Question #2/5
Some
Review
What is diffusion?...
A) The movement of particles from HIGH to LOW
concentration to reach equilibrium.
B) The movement of particles from LOW to
HIGH concentration to reach equilibrium.
C) A process which requires energy.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #2/5
Some
Review
What is diffusion?...
A) The movement of particles from HIGH to LOW
concentration to reach equilibrium.
B) The movement of particles from LOW to HIGH
concentration to reach equilibrium.
C) A process which requires energy.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #2/5
Some
Review
What is diffusion?...
A) The movement of particles from HIGH to LOW
concentration to reach equilibrium.
B) The movement of particles from LOW to HIGH
concentration to reach equilibrium.
C) A process which requires energy.
D) I don’t know…
No Problem…
Let’s Review
Again!
Quiz 2: Question #3/5
What will happen with the purple molecules?
A) The purple molecules will remain where they are.
B) All of the purple molecules will move to the left side.
C) Some of the purple molecules will move to the left side
D) I don’t know…
Quiz 2: Question #3/5
Next
Question
What will happen with the purple molecules?
A) The purple molecules will remain
where they are.
B) All of the purple molecules will
move to the left side.
C) Some of the purple molecules
will move to the left side.
D) I don’t know…
Great Job!
Let’s move on
to the
Next Question!
Quiz 2: Question #3/5
Some
Review
What will happen with the purple molecules?
A) The purple molecules will remain where they are.
B) All of the purple molecules will move to the left side.
C) Some of the purple molecules will move to the left
side.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #3/5
Some
Review
What will happen with the purple molecules?
A) The purple molecules will remain where they are.
B) All of the purple molecules will move to the left
side.
C) Some of the purple molecules will move to the left
side.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #3/5
Some
Review
What will happen with the purple molecules?
A) The purple molecules will remain where they are.
B) All of the purple molecules will move to the left side.
C) Some of the purple molecules will move to the left
side.
D) I don’t know…
No Problem…
Let’s Review
Again!
Quiz 2: Question #4/5
Ewww!! Yoshi “lets one loose”!
What will happen with this fart-smell & Why??
A) The fart-particles will stay around Yoshi because
there is no energy to move them.
B) The fart-particles will spread out to reach equilibrium,
making this whole room stinky!
C) The fart-particles will move from low to high
concentration.
D) I don’t know…
Quiz 2: Question #4/5
Last
Question
Ewww!! Yoshi “lets one loose”!
What will happen with this fart-smell & Why??
A) The fart-particles will stay around Yoshi because
there is no energy to move them.
B) The fart-particles will spread out to reach equilibrium,
making this whole room stinky!
C) The fart-particles will move from low to high
concentration.
D) I don’t know…
Great Job!
Let’s move on
to the
Last Question!
Quiz 2: Question #4/5
Some
Review
Ewww!! Yoshi “lets one loose”!
What will happen with this fart-smell & Why??
A) The fart-particles will stay around Yoshi because
there is no energy to move them.
B) The fart-particles will spread out to reach equilibrium,
making this whole room stinky!
C) The fart-particles will move from low to high
concentration.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #4/5
Some
Review
Ewww!! Yoshi “lets one loose”!
What will happen with this fart-smell & Why??
A) The fart-particles will stay around Yoshi because
there is no energy to move them.
B) The fart-particles will spread out to reach equilibrium,
making this whole room stinky!
C) The fart-particles will move from low to high
concentration.
Sorry, that’s not
D) I don’t know…
correct…
Let’s Review
Again!
Quiz 2: Question #4/5
Some
Review
Ewww!! Yoshi “lets one loose”!
What will happen with this fart-smell & Why??
A) The fart-particles will stay around Yoshi because
there is no energy to move them.
B) The fart-particles will spread out to reach equilibrium,
making this whole room stinky!
C) The fart-particles will move from low to high
concentration.
D) I don’t know…
No Problem…
Let’s Review
Again!
Quiz 2: Question #5/5
There are 20 water molecules on the
outside of the cell, and 5 water
molecules on the inside of the cell.
Which of the following statements is
true?
A) There is a higher concentration of water inside the cell,
than outside.
B) The cell is in equilibrium.
C) Water molecules will diffuse into the cell.
D) I don’t know…
Quiz 2: Question #5/5
Continue
Learning
There are 20 water molecules on the
outside of the cell, and 5 water
molecules on the inside of the cell.
Which of the following statements is
true?
A) There is a higher concentration of water inside the cell,
than outside.
B) The cell is in equilibrium.
C) Water molecules will diffuse into the cell.
D) I don’t know…
Great Job!
Let’s move on
to the
Osmosis!
Some
Review
Quiz 2: Question #5/5
There are 20 water molecules on the
outside of the cell, and 5 water
molecules on the inside of the cell.
Which of the following statements is
true?
A) There is a higher concentration of water inside the cell,
than outside.
B) The cell is in equilibrium.
C) Water molecules will diffuse into the cell.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #5/5
Some
Review
There are 20 water molecules on the
outside of the cell, and 5 water
molecules on the inside of the cell.
Which of the following statements is
true?
A) There is a higher concentration of water inside the cell,
than outside.
B) The cell is in equilibrium.
C) Water molecules will diffuse into the cell.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 2: Question #5/5
Continue
Learning
There are 20 water molecules on the
outside of the cell, and 5 water
molecules on the inside of the cell.
Which of the following statements is
true?
A) There is a higher concentration of water inside the cell,
than outside.
B) The cell is in equilibrium.
C) Water molecules will diffuse into the cell.
D) I don’t know…
No Problem…
Let’s Review
Again!
OSMOSIS:
Introduction (0/4)
Continue
Learning
Watch the animation below about a Red Blood Cell.
Questions to Think About:
1. How is distilled water
different from tap water?
2. What would cause the
Red Blood Cell to explode?
3. How is this related to
diffusion?
Continue
Learning
OSMOSIS:
Re-Take
Quiz
Solutes & Solvents (1/4)
Solutes are the “stuff”
dissolved in solvents…
Most solvents can move
across a cell membrane…
Most solutes cannot!
Solvents are the “stuff” that
hold the solutes (usually
water)!
OSMOSIS:
Definition (2/4)
Continue
Learning
Re-Take
Quiz
Osmosis is the movement
of water from LOW solute
concentration, to HIGH
solute concentration
(without the use of
ENERGY)!
Water molecules are great friends, they like to
make sure solute particles are never lonely!
OSMOSIS:
Animation (3/4)
Continue
Learning
Re-Take
Quiz
Watch the animation below about a Red Blood Cell.
Questions to Think About:
1. How is distilled water different from
tap water?
2. What would cause the Red Blood
Cell to explode?
3. How is this related to diffusion?
Water
Distilled
HIGHissolute
diffusing
waterconcentration
hasinto
NOthe
solute
Red
inside
particles
Blood
the
Cell
inRed
it…
from
Blood
Tap
HIGH
water
Cell,
water
has
LOW
a
solute
variety
concentration
concentration
of solutetoparticles
LOW
outside…
water
in it!
WATERconcentration.
rushes into the cell!
OSMOSIS:
Example (4/4)
Start
Quiz
Your mom packs you some delicious,
juicy strawberries in your lunch.
You are devastated to find that
strawberry-juice has leaked all over
the inside of your lunch bag!
WHAT HAPPENED???
Re-Take
Quiz
•The plastic baggy is semipermeable… just like a cell
membrane!
•Water (solvent) can pass
through the baggy…
•You have HIGH water
concentration inside your
baggy, and LOW water
concentration outside your
baggy…
•Water leaves your baggy,
and ruins your homework!
Quiz 3: Question #1/4
You add some Kool-Aid powder to some water.
Which is the solute, and Which is the solvent?
A) The water is the solute, and the powder is the solvent.
B) The water is the solvent, and the powder is the solute.
C) Because both are made of molecules, they are both solutes.
D) I don’t know…
Quiz 3: Question #1/4
Next
Question
You add some Kool-Aid powder to some water.
Which is the solute, and Which is the solvent?
A) The water is the solute, and the powder is the solvent.
B) The water is the solvent, and the powder is the solute.
C) Because both are made of molecules, they are both solutes.
D) I don’t know…
Great Job!
Let’s move on
to the
Next Question!
Quiz 3: Question #1/4
Continue
Learning
You add some Kool-Aid powder to some water.
Which is the solute, and Which is the solvent?
A) The water is the solute, and the powder is the solvent.
B) The water is the solvent, and the powder is the solute.
C) Because both are made of molecules, they are both solutes.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 3: Question #1/4
Continue
Learning
You add some Kool-Aid powder to some water.
Which is the solute, and Which is the solvent?
A) The water is the solute, and the powder is the solvent.
B) The water is the solvent, and the powder is the solute.
C) Because both are made of molecules, they are both
solutes.
Sorry, that’s not
D) I don’t know…
correct…
Let’s Review
Again!
Quiz 3: Question #1/4
Continue
Learning
You add some Kool-Aid powder to some water.
Which is the solute, and Which is the solvent?
A) The water is the solute, and the powder is the solvent.
B) The water is the solvent, and the powder is the solute.
C) Because both are made of molecules, they are both solutes.
D) I don’t know…
No Problem…
Let’s Review
Again!
Quiz 3: Question #2/4
Osmosis is the movement of water from…
A) High to low solute concentration.
B) Low to high water concentration.
C) High to low water concentration.
D) I don’t know…
Quiz 3: Question #2/4
Next
Question
Osmosis is the movement of water from…
A) High to low solute concentration.
B) Low to high water concentration.
C) High to low water concentration.
D) I don’t know…
Great Job!
Let’s move on
to the
Next Question!
Quiz 3: Question #2/4
Some
Review
Osmosis is the movement of water from…
A) High to low solute concentration.
B) Low to high water concentration.
C) High to low water concentration.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 3: Question #2/4
Some
Review
Osmosis is the movement of water from…
A) High to low solute concentration.
B) Low to high water concentration.
C) High to low water concentration.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 3: Question #2/4
Continue
Learning
Osmosis is the movement of water from…
A) High to low solute
concentration.
B) Low to high water concentration.
C) High to low water concentration.
D) I don’t know…
No Problem…
Let’s Review
Again!
Quiz 3: Question #3/4
Gummy Bears are made of tons of sugar.
What will happen if you place a Gummy
Bear in a glass of distilled water?
A) Water will rush in, and the Gummy Bear will inflate.
B) Water will leave the Gummy Bear, and it will shrivel up.
C) Sugar will leave the Gummy Bear to establish balance.
D) I don’t know…
Quiz 3: Question #3/4
Last
Question
Gummy Bears are made of tons of sugar.
What will happen if you place a Gummy
Bear in a glass of distilled water?
A) Water will rush in, and the Gummy Bear will inflate.
B) Water will leave the Gummy Bear, and it will shrivel up.
Great Job!
C) Sugar will leave the Gummy Bear to establish balance.
Let’s move on
to the
D) I don’t know…
Last Question!
Quiz 3: Question #3/4
Some
Review
Gummy Bears are made of tons of sugar.
What will happen if you place a Gummy
Bear in a glass of distilled water?
A) Water will rush in, and the Gummy Bear will inflate.
B) Water will leave the Gummy Bear, and it will shrivel
up.
C) Sugar will leave the Gummy Bear to establish balance.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 3: Question #3/4
Some
Review
Gummy Bears are made of tons of sugar.
What will happen if you place a Gummy
Bear in a glass of distilled water?
A) Water will rush in, and the Gummy Bear will inflate.
B) Water will leave the Gummy Bear, and it will shrivel up.
C) Sugar will leave the Gummy Bear to establish
balance.
D) I don’t know…
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 3: Question #3/4
Some
Review
Gummy Bears are made of tons of sugar.
What will happen if you place a Gummy
Bear in a glass of distilled water?
A) Water will rush in, and the Gummy Bear will inflate.
B) Water will leave the Gummy Bear, and it will shrivel up.
C) Sugar will leave the Gummy Bear to establish balance.
D) I don’t know…
No Problem…
Let’s Review
Again!
Quiz 3: Question #4/4
You eat a bag of super salty potato chips for
lunch. Salt cannot diffuse across your cell’s
membranes. What will happen to your cells,
& Why?
A) Your cells will explode…Because water
will rush in towards the higher solute concentration.
B) Your cells will shrivel up…Because water
will rush out towards the lower solute concentration.
C) Your cells will shrivel up…Because water
will rush out towards the higher solute concentration.
D) Nothing will happen… Because the salt
is on the outside of your cells.
Quiz 3: Question #4/4
One Last
Thing
You eat a bag of super salty potato chips for
lunch. Salt cannot diffuse across your cell’s
membranes. What will happen to your cells,
& Why?
A) Your cells will explode…Because water will rush in
towards the higher solute concentration.
B) Your cells will shrivel up…Because water will
rush out towards the lower solute
concentration.
C) Your cells will shrivel up…Because water will rush
out towards the higher solute concentration.
D) Nothing will happen… Because the salt is on the
outside of your cells.
Great Job!
There’s just one
last thing…
Quiz 3: Question #4/4
Some
Resources
You eat a bag of super salty potato chips for
lunch. Salt cannot diffuse across your cell’s
membranes. What will happen to your cells,
& Why?
A) Your cells will explode…Because water will
rush in towards the higher solute
concentration.
B) Your cells will shrivel up…Because water will rush
out towards the lower solute concentration.
C) Your cells will shrivel up…Because water will rush
out towards the higher solute concentration.
D) Nothing will happen… Because the salt is on the
outside of your cells.
Sorry, that’s not
correct…
Here’s some
resources!
Quiz 3: Question #4/4
Some
Resources
You eat a bag of super salty potato chips for
lunch. Salt cannot diffuse across your cell’s
membranes. What will happen to your cells,
& Why?
A) Your cells will explode…Because water will rush in
towards the higher solute concentration.
B) Your cells will shrivel up…Because water will rush
out towards the lower solute concentration.
C) Your cells will shrivel up…Because water will
rush out towards the higher solute
concentration.
D) Nothing will happen… Because the salt is on the
outside of your cells.
Sorry, that’s not
correct…
Let’s Review
Again!
Quiz 3: Question #4/4
Some
Resources
You eat a bag of super salty potato chips for
lunch. Salt cannot diffuse across your cell’s
membranes. What will happen to your cells,
& Why?
A) Your cells will explode…Because water will rush in
towards the higher solute concentration.
B) Your cells will shrivel up…Because water will rush
out towards the lower solute concentration.
C) Your cells will shrivel up…Because water will rush
out towards the higher solute concentration.
D) Nothing will happen… Because the salt is on
the outside of your cells.
Sorry, that’s not
correct…
Let’s Review
Again!
Back to
Diffusion
Back to
Osmosis
Interested in some
Diffusion &
Osmosis Fun??
Egg Osmosis
Other Activities
Need some more
help??
Diffusion, Osmosis
& Cell
Membranes