Transcript Cellular Transport

Cellular Transport
Homeostasis
• Cells respond to their
environment to maintain
homeostasis.
• One way is to move substances
across the cell membrane.
Substances move across the
Cell Membrane
Proteins and Lipids
Types of Transport
• Passive Transport
• Active Transport
Diffusion or Passive
Transport
• Does NOT require energy.
• Molecules move from
high concentration to
low concentration.
• Molecules move with the
concentration gradient.
What’s happening?
How would diffusion
happen in a cell?
How would diffusion
happen in a cell?
How would diffusion
happen in a cell?
How would diffusion
happen in a cell?
How would diffusion
happen in a cell?
How would diffusion
happen in a cell?
How would diffusion
happen in a cell?
How would diffusion
happen in a cell?
Osmosis is a type of
diffusion
Cell Membrane
Osmosis is a type of
diffusion
Cell Membrane
Osmosis is a type of
diffusion
Cell Membrane
Osmosis is a type of
diffusion
Cell Membrane
Osmosis is a type of
diffusion (water)
Cell Membrane
Osmosis is a type of
diffusion
Cell Membrane
Osmosis is a type of
diffusion
Cell Membrane
Osmosis is a type of
diffusion
Cell Membrane
HELP WANTED!
Facilitated Diffusion
I’m a
Channel, I
can help!
Channel proteins help substances
pass through the cell membrane.
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
HELP WANTED!
I’m a
Channel, I
can help!
Explain what
is happening
Explain what
is happening
Explain what
is happening
Explain what
is happening
Explain what
is happening
Explain what
is happening
Explain what
is happening
Explain what
is happening
How does Passive
Transport affect
my cells?
What would happen to
the animal cells in each
beaker?
80% H2O
80% H2O
80% H2O
100% Distilled
Water
80% Water
20% Dissolved
Substances
70% Water
30% Dissolved
Substances
Which way did the
water move?
80% H2O
100% Distilled
Water
Why did the cell
get so big?
Which way did the
water move?
80% H2O
80% Water
20% Dissolved
Substances
Why did the cell
stay the same
size?
Which way did the
water move?
80% H2O
70% Water
30% Dissolved
Substances
Why did the cell get
so small?
REVIEW
1. Explain passive transport.
2. Explain diffusion.
3. Explain osmosis.
4. Explain facilitated diffusion.
How is Active
Transport different?
1. Active transport requires energy.
2. Molecules move from low
concentration to high
concentration
3. Molecules move against
concentration gradient.
Endocytosis
• Bring in particles using cell
membrane
– There are 2 types:
• Phagocytosis
• Pinocytosis
Phagocytosis
Amoeba
“Eats” large particles
Pinocytosis
“Cell Drinking” Brings in small particles or
liquids
Exocytosis
How the cell gets rid of wastes
REVIEW
1. Explain Active Transport.
2. How does a cell take in LARGE
particles?
3. How does a cell take in small or
liquid particles?
4. How does the cell get rid of
wastes?