Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * *...
-
Upload
amie-atkinson -
Category
Documents
-
view
230 -
download
0
Transcript of Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * *...
![Page 1: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/1.jpg)
Unit 3: Cells
Cell Transport
![Page 2: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/2.jpg)
![Page 3: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/3.jpg)
The Goalof cell transport
Homeostasis Stable internal conditions*
* Such as temperature and water
![Page 4: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/4.jpg)
Passive Transport
Definition• Movement across a cell
membrane with NO energy• Goes from high to low
concentration
Types of Passive Transport• Diffusion• Osmosis• Facilitated channels• Ion channels
![Page 5: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/5.jpg)
Passive Transport: Diffusion
Definition• Movement from an high
concentration to an area of low concentration
![Page 6: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/6.jpg)
Passive Transport: Osmosis
Definition• Process of WATER moving
from high to low concentration
• Hypotonic osmosis: water moves INTO the cell
and it swells.
• Hypertonic osmosis: water moves OUT off a cell.
• The cell shrinks.
Isotonic osmosis: solution and cell are both at homeostasis.
![Page 7: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/7.jpg)
Passive Transport: Facilitated Diffusion
Definition• Diffusion with the help of a
busser protein
Busser protein
![Page 8: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/8.jpg)
• Passageway in a membrane for ions* to pass through
• Ion = any atom with a charge (+ or -)
• Example: sodium (Na + or potassium K+)
Passive Transport: Ion Channel
Definition
![Page 9: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/9.jpg)
Active Transport
Definition• Substances moving across
the cell membrane with energy
• Goes from low to high concentration
Types of Active Transport• Cell membrane pump• Endocytosis• Exocytosis
![Page 10: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/10.jpg)
Active Transport: Cell-Membrane Pump
Definition• Bussers pump molecules
across the membrane from LOW to HIGH
![Page 11: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/11.jpg)
Active Transport: Endocytosis
• Definition• The process in which
cells ingest (take in) molecules
• 2 types• Pinocytosis – cells
take in liquids • Endocytosis – cells
take in solids
![Page 12: Unit 3: Cells Cell Transport. The Goal of cell transport Homeostasis Stable internal conditions * * Such as temperature and water.](https://reader035.fdocuments.in/reader035/viewer/2022081501/56649f1b5503460f94c301e2/html5/thumbnails/12.jpg)
Active Transport: ExocytosisDefinition
• Cells expel (get rid of) molecules