1. Moving Cellular Materials
Cell Membrane:
boundaries between cells and their organelles
Controls the movement of substances into and out of cells
Semipermeable
lets only certain substances in or out
depends on the physical & chemical properties of the substance passing through
Cell needs food, oxygen & minerals
Cell needs to release waste

2. passive transport is WITHOUT energy active transport is WITH energy
The movement of substances through the cell membrane can 
happen through passive and active transport
passive transport is WITHOUT energy
active transport is WITH energy
Passive
Transport
Active
carbon
dioxide

3. Cell transport animation
Passive_Transport
Passive Transport
movement of substances 
through a cell membrane 
without using the cell's energy
depends on the amount of 
substance on each side of the 
membrane
Cell transport animation

4. Goes from HIGH to LOW Diffusion
BP diffusion
until equilibrium occurs
Substances always move from HIGH 
concentration to LOW concentration.

6. DIFFUSION & OSMOSIS
Diffusion is the movement of molecules from areas of high concentration 

to areas of low concentration.
Osmosis is the diffusion of water molecules through the cell membrane.

7. Osmosis

8. Use an arrow to show the direction the particles will move.
Move circle and triangles to show equilibrium
Use an arrow to show the direction the 

particles will move.

9. Use an arrow to show the direction the water particles will move.
Diffusion and Osmosis
Use an arrow to show the direction the water particles will move.
Egg Lab
water
corn syrup

10. Facilitated Diffusion
3rd type of passive transport (no energy used)
Transport
protein
glucose molecules
When molecule pass through a cell membrane using special proteins 
because they are tool large or chemically unable

11. Two types of transport proteins:
Channel proteins:
form pores through the membrane
atomic particles
like sodium ions & potassium ions
Carrier proteins:
carry large molecules
like sugar

12. Facilitated Diffusion (glucose) (minerals)
(Oxygen &
Carbon Dioxide)
Osmosis
(water)
Facilitated Diffusion
(glucose)
(minerals)
BP Active Transport
Transport
protein
carbon dioxide
oxygen
Glucose
Water

13. Active Transport
the movement of substances through a cell membrane only 
using the cell's energy
substances move from low concentrations to areas of 
higher concentration
get nutrients from environment through carrier proteins and 
remove waste materials
Passive
Transport
high
low
no energy
Active
Transport
low
high
uses energy

14. Endocytosis is the process during which a cell takes in a large substance
by surrounding it with the cell membrane, forming a vesicle inside the cell
Substance 
too large to 
come in
During the process of Exocytosis, a cell's vesicles release their contents 
outside the cell by joining with the the cell membrane
Substances 
too large to 
go out