How do molecules move in and out of our cells?

1
Movin' Around

• How do molecules move in and out of our cells?

2
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!
3
Quiz 1 Question 1/3
All living things are composed of at least one
______________.
A) DNA molecule

1. Cell

C) Organ System
D) I dont know
4
Quiz 1 Question 1/3
NextQuestion
All living things are composed of at least one
______________.
Great Job! Lets move on to the Next Question!

1. DNA molecule
2. Cell
3. Organ System
4. I dont know

5
Quiz 1 Question 1/3
SomeReview
All living things are composed of at least one
______________.
Sorry, thats not correct Lets Review Again!

1. DNA molecule
2. Cell
3. Organ System
4. I dont know

6
Quiz 1 Question 1/3
SomeReview
All living things are composed of at least one
______________.
Sorry, thats not correct Lets Review Again!

1. DNA molecule
2. Cell
3. Organ System
4. I dont know

7
Quiz 1 Question 1/3
Some Review
All living things are composed of at least one
______________.
No Problem Lets Review Again!

1. DNA molecule
2. Cell
3. Organ System
4. I dont know

8
Quiz 1 Question 2/3
Which process keeps the internal conditions of
cells stable and consistent?
A) Metabolism
B) Photosynthesis
C) Homeostasis
D) I dont know
9
Quiz 1 Question 2/3
NextQuestion
Which process keeps the internal conditions of
cells stable and consistent?
Great Job! Lets move on to the Next Question!

1. Metabolism
2. Photosynthesis
3. Homeostasis
4. I dont know

10
Quiz 1 Question 2/3
SomeReview
Which process keeps the internal conditions of
cells stable and consistent?
Sorry, thats not correct Lets Review Again!

1. Metabolism
2. Photosynthesis
3. Homeostasis
4. I dont know

11
Quiz 1 Question 2/3
SomeReview
Which process keeps the internal conditions of
cells stable and consistent?
Sorry, thats not correct Lets Review Again!

1. Metabolism
2. Photosynthesis
3. Homeostasis
4. I dont know

12
Quiz 1 Question 2/3
SomeReview
Which process keeps the internal conditions of
cells stable and consistent?
No Problem Lets Review Again!

1. Metabolism
2. Photosynthesis
3. Homeostasis
4. I dont know

13
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
14
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.
Great Job! Lets move on to Diffusion!

1. True
2. False

15
Quiz 1 Question 3/3
SomeReview
(True or False)Cells Membranes are an outer
barrier, which control what moves into and out of
a cell.
Sorry, thats not correct Lets Review Again!

1. True
2. False

16
REVIEW What are cells?
Continue Learning

• Remember that
• All living things are made of cells.
• Cells are always experiencing changing
  environments!
• Outside Change ? Inside Change
• Cells need to maintain balance.

17
REVIEW What is homeostasis?
Continue Learning

• Homeostasis is the process of keeping the inside
  of cells stable and healthy

OUTSIDE
OUTSIDE
INSIDE
OUTSIDE
Regardless of the craziness going on around the
cell!
18
Re-TakeQuiz
But sometimes changes on the OUTSIDE force the
INSIDE to take control!
Your body wants to keep the inside and outside
balanced
Outside
Inside
19
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 the
property!
20
Continue Learning
Control Center
Workers
Security Gate Traffic Control
21
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!

22
DIFFUSION Introduction (0/5)
Continue Learning

• Watch the animation below.
• Questions to Think About1. 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?

23
DIFFUSION Equilibrium (1/5)
Re-TakeQuiz
Continue Learning

• Particles (Molecules and Atoms) need to be
  balanced out

This is NOT balanced! Notice all of the
dye-particles are concentrated in the center
and bottom of the water!
This IS balanced! Notice the dye particles are
now spread out throughout the water!
Balance Equilibrium
24
DIFFUSION Definition (2/5)
Continue Learning
Re-TakeQuiz

• 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!
25
DIFFUSION Animation (3/5)
Continue Learning
Re-Take Quiz

• Watch this animation again!
• Remember to Think About
• What do you think the dots represent?
• How many dots start in the corner, compared to
  the rest of the box?
• How do the dots move? Which direction?
• What is the end result?

The dots/particles move from an area with MORE
(High Concentration), to an area with LESS (Lower
Concentration)!
The dots are particles (molecules or atoms).
There are way more dots/particles in the one
corner, than the rest of the box!
The dots/particles are evenly spread out and
balanced (in Equilibrium)!
26
DIFFUSION Example (4/5)
Continue Learning
Re-TakeQuiz
Diffusion of Dye particles/molecules

• 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!

27
DIFFUSION Example (4/5)
Start the Quiz
Re-TakeQuiz

• 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!
28
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 dont know
29
Quiz 2 Question 1/5
NextQuestion

• ____________ is the state in which there is
  balance, and any particles/molecules are evenly
  spread out.

Great Job! Lets move on to the Next Question!

1. Diffusion
2. Equilibrium
3. Isotropy
4. I dont know

30
Quiz 2 Question 1/5
SomeReview

• ____________ is the state in which there is
  balance, and any particles/molecules are evenly
  spread out.

Sorry, thats not correct Lets Review Again!

1. Diffusion
2. Equilibrium
3. Isotropy
4. I dont know

31
Quiz 2 Question 1/5
SomeReview

• ____________ is the state in which there is
  balance, and any particles/molecules are evenly
  spread out.

Sorry, thats not correct Lets Review Again!

1. Diffusion
2. Equilibrium
3. Isotropy
4. I dont know

32
Quiz 2 Question 1/5
SomeReview

• ____________ is the state in which there is
  balance, and any particles/molecules are evenly
  spread out.

No Problem Lets Review Again!

1. Diffusion
2. Equilibrium
3. Isotropy
4. I dont know

33
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 dont know
34
Quiz 2 Question 2/5
NextQuestion

• What is diffusion?...

• The movement of particles from HIGH to LOW
  concentration to reach equilibrium.
• The movement of particles from LOW to HIGH
  concentration to reach equilibrium.
• A process which requires energy.
• I dont know

Great Job! Lets move on to the Next Question!
35
Quiz 2 Question 2/5
SomeReview

• What is diffusion?...

• The movement of particles from HIGH to LOW
  concentration to reach equilibrium.
• The movement of particles from LOW to HIGH
  concentration to reach equilibrium.
• A process which requires energy.
• I dont know

Sorry, thats not correct Lets Review Again!
36
Quiz 2 Question 2/5
SomeReview

• What is diffusion?...

• The movement of particles from HIGH to LOW
  concentration to reach equilibrium.
• The movement of particles from LOW to HIGH
  concentration to reach equilibrium.
• A process which requires energy.
• I dont know

Sorry, thats not correct Lets Review Again!
37
Quiz 2 Question 2/5
SomeReview

• What is diffusion?...

• The movement of particles from HIGH to LOW
  concentration to reach equilibrium.
• The movement of particles from LOW to HIGH
  concentration to reach equilibrium.
• A process which requires energy.
• I dont know

No Problem Lets Review Again!
38
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 dont know
39
Quiz 2 Question 3/5
NextQuestion

• What will happen with the purple molecules?

1. The purple molecules will remain where they
   are.
2. All of the purple molecules will move to the
   left side.
3. Some of the purple molecules will move to the
   left side.
4. I dont know

Great Job! Lets move on to the Next Question!
40
Quiz 2 Question 3/5
SomeReview

• What will happen with the purple molecules?

1. The purple molecules will remain where they
   are.
2. All of the purple molecules will move to the
   left side.
3. Some of the purple molecules will move to the
   left side.
4. I dont know

Sorry, thats not correct Lets Review Again!
41
Quiz 2 Question 3/5
SomeReview

• What will happen with the purple molecules?

1. The purple molecules will remain where they
   are.
2. All of the purple molecules will move to the
   left side.
3. Some of the purple molecules will move to the
   left side.
4. I dont know

Sorry, thats not correct Lets Review Again!
42
Quiz 2 Question 3/5
SomeReview

• What will happen with the purple molecules?

1. The purple molecules will remain where they
   are.
2. All of the purple molecules will move to the
   left side.
3. Some of the purple molecules will move to the
   left side.
4. I dont know

No Problem Lets Review Again!
43
Quiz 2 Question 4/5

• Ewww!! Yoshi lets one loose!
• What will happen with this fart-smell Why??

• 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!

• The fart-particles will move from low to high
• concentration.

D) I dont know
44
Quiz 2 Question 4/5
LastQuestion

• 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 dont know
Great Job! Lets move on to the Last Question!
45
Quiz 2 Question 4/5
SomeReview

• 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 dont know
Sorry, thats not correct Lets Review Again!
46
Quiz 2 Question 4/5
SomeReview

• 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 dont know
Sorry, thats not correct Lets Review Again!
47
Quiz 2 Question 4/5
SomeReview

• 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 dont know
No Problem Lets Review Again!
48
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?

• 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 dont know
49
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.
• I dont know

Great Job! Lets move on to the Osmosis!
50
Quiz 2 Question 5/5
SomeReview

• 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.
• I dont know

Sorry, thats not correct Lets Review Again!
51
Quiz 2 Question 5/5
SomeReview

• 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.
• I dont know

Sorry, thats not correct Lets Review Again!
52
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.
• I dont know

No Problem Lets Review Again!
53
OSMOSIS Introduction (0/4)
Continue Learning

• Watch the animation below about a Red Blood Cell.

Questions to Think About1. 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?
54
OSMOSIS Solutes Solvents (1/4)
Continue Learning
Re-TakeQuiz

• 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)!
55
OSMOSIS Definition (2/4)
Re-TakeQuiz
Continue Learning

• Osmosis is the movement of water from LOW solute
  concentration, to HIGH solute concentration
  (without the use of ENERGY)!

Particles move when theres imbalance!
Water molecules are great friends, they like to
make sure solute particles are never lonely!
56
OSMOSIS Animation (3/4)
Continue Learning
Re-TakeQuiz

• Watch the animation below about a Red Blood Cell.

Questions to Think About1. 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?
Distilled water has NO solute particles in it
Tap water has a variety of solute particles in
it!
HIGH solute concentration inside the Red Blood
Cell, LOW solute concentration outside WATER
rushes into the cell!
Water is diffusing into the Red Blood Cell from
HIGH water concentration to LOW water
concentration.
57
OSMOSIS Example (4/4)
Re-TakeQuiz
StartQuiz

• 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???

• The plastic baggy is semi-permeable 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!
  

58
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 dont know
59
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?

1. The water is the solute, and the powder is the
   solvent.
2. The water is the solvent, and the powder is
   the solute.
3. Because both are made of molecules, they are
   both solutes.
4. I dont know

Great Job! Lets move on to the Next Question!
60
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?

1. The water is the solute, and the powder is the
   solvent.
2. The water is the solvent, and the powder is
   the solute.
3. Because both are made of molecules, they are
   both solutes.
4. I dont know

Sorry, thats not correct Lets Review Again!
61
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?

1. The water is the solute, and the powder is the
   solvent.
2. The water is the solvent, and the powder is
   the solute.
3. Because both are made of molecules, they are
   both solutes.
4. I dont know

Sorry, thats not correct Lets Review Again!
62
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?

1. The water is the solute, and the powder is the
   solvent.
2. The water is the solvent, and the powder is
   the solute.
3. Because both are made of molecules, they are
   both solutes.
4. I dont know

No Problem Lets Review Again!
63
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 dont know
64
Quiz 3 Question 2/4
NextQuestion

• Osmosis is the movement of water from

1. High to low solute concentration.
2. Low to high water concentration.
3. High to low water concentration.
4. I dont know

Great Job! Lets move on to the Next Question!
65
Quiz 3 Question 2/4
SomeReview

• Osmosis is the movement of water from

1. High to low solute concentration.
2. Low to high water concentration.
3. High to low water concentration.
4. I dont know

Sorry, thats not correct Lets Review Again!
66
Quiz 3 Question 2/4
SomeReview

• Osmosis is the movement of water from

1. High to low solute concentration.
2. Low to high water concentration.
3. High to low water concentration.
4. I dont know

Sorry, thats not correct Lets Review Again!
67
Quiz 3 Question 2/4
Continue Learning

• Osmosis is the movement of water from

1. High to low solute concentration.
2. Low to high water concentration.
3. High to low water concentration.
4. I dont know

No Problem Lets Review Again!
68
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 dont know
69
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?

• 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 dont know

Great Job! Lets move on to the Last Question!
70
Quiz 3 Question 3/4
SomeReview

• Gummy Bears are made of tons of sugar. What will
  happen if you place a Gummy Bear in a glass of
  distilled water?

• 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 dont know

Sorry, thats not correct Lets Review Again!
71
Quiz 3 Question 3/4
SomeReview

• Gummy Bears are made of tons of sugar. What will
  happen if you place a Gummy Bear in a glass of
  distilled water?

• 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 dont know

Sorry, thats not correct Lets Review Again!
72
Quiz 3 Question 3/4
SomeReview

• Gummy Bears are made of tons of sugar. What will
  happen if you place a Gummy Bear in a glass of
  distilled water?

• 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 dont know

No Problem Lets Review Again!
73
Quiz 3 Question 4/4

• You eat a bag of super salty potato chips for
  lunch. Salt cannot diffuse across your cells
  membranes. What will happen to your cells, Why?

• Your cells will explodeBecause water
• will rush in towards the higher solute
  concentration.

B) Your cells will shrivel upBecause water
will rush out towards the lower solute
concentration.
C) Your cells will shrivel upBecause water
will rush out towards the higher solute
concentration.
D) Nothing will happen Because the salt is on
the outside of your cells.
74
Quiz 3 Question 4/4
One Last Thing

• You eat a bag of super salty potato chips for
  lunch. Salt cannot diffuse across your cells
  membranes. What will happen to your cells, Why?

A) Your cells will explodeBecause water will
rush in towards the higher solute
concentration. B) Your cells will shrivel
upBecause water will rush out towards the lower
solute concentration. C) Your cells will
shrivel upBecause 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! Theres just one last thing
75
Quiz 3 Question 4/4
Some Resources

• You eat a bag of super salty potato chips for
  lunch. Salt cannot diffuse across your cells
  membranes. What will happen to your cells, Why?

A) Your cells will explodeBecause water will
rush in towards the higher solute
concentration. B) Your cells will shrivel
upBecause water will rush out towards the lower
solute concentration. C) Your cells will
shrivel upBecause water will rush out towards
the higher solute concentration. D) Nothing
will happen Because the salt is on the outside
of your cells.
Sorry, thats not correct Heres some resources!
76
Quiz 3 Question 4/4
SomeResources

• You eat a bag of super salty potato chips for
  lunch. Salt cannot diffuse across your cells
  membranes. What will happen to your cells, Why?

A) Your cells will explodeBecause water will
rush in towards the higher solute
concentration. B) Your cells will shrivel
upBecause water will rush out towards the lower
solute concentration. C) Your cells will
shrivel upBecause water will rush out towards
the higher solute concentration. D) Nothing
will happen Because the salt is on the outside
of your cells.
Sorry, thats not correct Lets Review Again!
77
Quiz 3 Question 4/4
Some Resources

• You eat a bag of super salty potato chips for
  lunch. Salt cannot diffuse across your cells
  membranes. What will happen to your cells, Why?

A) Your cells will explodeBecause water will
rush in towards the higher solute
concentration. B) Your cells will shrivel
upBecause water will rush out towards the lower
solute concentration. C) Your cells will
shrivel upBecause water will rush out towards
the higher solute concentration. D) Nothing
will happen Because the salt is on the outside
of your cells.
Sorry, thats not correct Lets Review Again!
78
Back to Diffusion
The End
Back to Osmosis

• Interested in some Diffusion Osmosis Fun??
• Egg Osmosis
• Other Activities

Need some more help?? Diffusion, Osmosis Cell
Membranes