Download - Ch.8 cell transport - notes version
![Page 1: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/1.jpg)
Cellular Transport
Chapter 8
![Page 2: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/2.jpg)
Figure 8.6 The detailed structure of an animal cell’s plasma membrane, in cross section
![Page 3: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/3.jpg)
Figure 8.4 The fluidity of membranes
![Page 4: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/4.jpg)
Figure 8.9 Some functions of membrane proteins
![Page 5: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/5.jpg)
Cells move substances through the cell membrane by
a process called transport
• Two Types of Transport:
–Passive Transport
–Active Transport
![Page 6: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/6.jpg)
What is Diffusion or Passive Transport?
• Requires no energy from cell.
• Molecules move from high concentration to low concentration.
• Molecules move with the concentration gradient.
![Page 7: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/7.jpg)
Figure 8.10 The diffusion of solutes across membranes
![Page 8: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/8.jpg)
How would diffusion happen in a cell?
![Page 9: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/9.jpg)
Osmosis is a type of diffusion
Cell Membrane
![Page 10: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/10.jpg)
Figure 8.11 Osmosis
![Page 11: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/11.jpg)
HELP WANTED!Facilitated Diffusion
tranport proteins help substances (glucose) pass through the cell membrane. Still passive transport - no energy required.
I’m a Channel, I can help!
![Page 12: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/12.jpg)
Figure 8.14 Two models for facilitated diffusion
![Page 13: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/13.jpg)
Water balance of cells without walls:
100% Distilled Water
80% H2O
70% Water30% Dissolved
Substances
80% H2O
80% Water20% Dissolved
Substances
80% H2O
![Page 14: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/14.jpg)
Which way did the water move?
100% Distilled Water
80% H2O
Why did the cell get so big?
![Page 15: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/15.jpg)
Which way did the water move?
80% Water20% Dissolved
Substances
80% H2O
Why did the cell stay the same
size?
![Page 16: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/16.jpg)
Which way did the water move?
70% Water30% Dissolved
Substances
80% H2O
Why did the cell get so small?
![Page 17: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/17.jpg)
Figure 8.12 The water balance of living cells
![Page 18: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/18.jpg)
Figure 8.13 The contractile vacuole of Paramecium: an evolutionary adaptation for osmoregulation
![Page 19: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/19.jpg)
Figure 8.15 The sodium-potassium pump: a specific case of active transport
![Page 20: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/20.jpg)
Figure 8.17 An electrogenic pump
![Page 21: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/21.jpg)
Figure 8.18 Cotransport
![Page 22: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/22.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 23: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/23.jpg)
Figure 8.16 Review: passive and active transport compared
![Page 24: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/24.jpg)
Endocytosis• Cells bring large in particles using
cell membrane
– There are 2 types:• Phagocytosis
• Pinocytosis
![Page 25: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/25.jpg)
Phagocytosis
• This is the ingestion of large particles.• Your white bloods cells also do this.
Amoeba
![Page 26: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/26.jpg)
Pinocytosis
• Tiny pockets form along cell membrane, and pinch off into vacuoles inside the cell. Sometimes called “Cell Drinking”
![Page 27: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/27.jpg)
Figure 8.19 The three types of endocytosis in animal cells
![Page 28: Ch.8 cell transport - notes version](https://reader035.vdocuments.net/reader035/viewer/2022062319/55835fa3d8b42afe418b52d0/html5/thumbnails/28.jpg)
Exocytosis
• This is how the cell gets rid of waste.