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Circulation in Cells
Cell Membrane
- Allows entry and exit of materials.
Channel Protein
Cell
Membrane
Lipid
Outside of Cell
Inside of Cell
Marker Protein
ReceptorProtein
Carbohydrate chain
Cells move substances through the cell membrane
by a process called transportTwo Types of Transport:
Passive Transport
Active Transport
What is Passive Transport?
Requires no energy from cell.
Molecules move from high concentration to low concentration.
Molecules move with the concentration gradient.
What’s happening?
How would diffusion happen in a cell?
Osmosis is a type of diffusion.
Cell Membrane
HELP WANTED!
I’m a Channel, I can help!
Explain what is happening.
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.
Types of Transport- Passive transport
- Diffusion – molecules from high to low- http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/
animation__how_diffusion_works.html
- Osmosis – water from high to low- http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/
animation__how_osmosis_works.html
- Active transport- http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/
animation__how_facilitated_diffusion_works.html
- Endocytosis – taking in- Phagocytosis – solids- http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/
animation__phagocytosis.html
- Pinocytosis - liquids- Exocytosis
- Removal off