cell transport
TRANSCRIPT
![Page 1: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/1.jpg)
The Cell MembraneOsmosis and Diffusion
![Page 2: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/2.jpg)
The Plasma (Cell) Membrane
- Flexible boundary- Allow entry and exit of
materials- Surface markers- Selectively permeable/semi-
permeable - Phospholipids- Fluid mosaic model
![Page 3: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/3.jpg)
Channel Protein
Cell
Membrane
Lipid
Outside of Cell
Inside of Cell
Marker Protein
ReceptorProtein
Carbohydrate chain
![Page 4: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/4.jpg)
Cells move substances through the cell membrane
by a process called transport
Two Types of Transport:
Passive Transport
Active Transport
![Page 5: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/5.jpg)
What is Passive Transport?
Requires no energy from cell.
Molecules move from high concentration to
low concentration.
Molecules move with the concentration gradient.
![Page 6: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/6.jpg)
What’s happening?
![Page 7: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/7.jpg)
How would diffusion happen in a cell?
![Page 8: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/8.jpg)
Osmosis is a type of diffusion
Cell Membrane
![Page 9: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/9.jpg)
HELP WANTED!
I’m a Channel, I can help!
![Page 10: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/10.jpg)
Explain what is happening
![Page 11: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/11.jpg)
Cellular Transport and Osmosis
- Maintaining homeostasis/equilibrium
- Hypertonic solution – low water- Hypotonic solution – high water,
lyses- Isotonic solution – equal solutions
![Page 12: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/12.jpg)
What would happen to the animal cells in each beaker?
100% Distilled Water
80% H2O
70% Water30% Dissolved
Substances
80% H2O
80% Water20% Dissolved
Substances
80% H2O
![Page 13: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/13.jpg)
Which way did the water move?
100% Distilled Water
80% H2O
Why did the cell get so big?
![Page 14: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/14.jpg)
Which way did the water move?
80% Water20% Dissolved
Substances
80% H2O
Why did the cell stay the same
size?
![Page 15: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/15.jpg)
Which way did the water move?
70% Water30% Dissolved
Substances
80% H2O
Why did the cell get so small?
![Page 16: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/16.jpg)
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.
![Page 17: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/17.jpg)
Which way would the solute be moving if this were active
transport?
90% Water
80% H2O
Why would it move that direction?
![Page 18: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/18.jpg)
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
![Page 19: Cell transport](https://reader036.vdocuments.site/reader036/viewer/2022062303/55635cdbd8b42a734b8b4bbb/html5/thumbnails/19.jpg)