Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use...
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Transcript of Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use...
![Page 1: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/1.jpg)
Cellular Transport NotesCh. 8.1
![Page 2: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/2.jpg)
Types of Cellular Transport
• Passive Transport
cell doesn’t use energy1. Diffusion
2. Facilitated Diffusion
3. Osmosis
• Active Transport
cell does use energy1. Protein Pumps
2. Endocytosis
3. Exocytosis
high
low
This is gonna
be hard work!!
high
low
Weeee!!!
•Animations of Active Transport & Passive
Transport
![Page 3: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/3.jpg)
Passive Transport• cell uses no energy
• molecules move randomly
• Molecules spread out from an area of high concentration to an area of low concentration.
• (HighLow)• Three types:
![Page 4: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/4.jpg)
3 Types of Passive Transport
1. Diffusion
2. Facilitative Diffusion – diffusion with the help of transport proteins
3. Osmosis – diffusion of water
![Page 5: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/5.jpg)
Passive Transport: 1. Diffusion
1. Diffusion: random movement of particles from an area of high concentration to an area of low concentration.
(High to Low)
• Diffusion continues until all molecules are evenly spaced (equilibrium is reached)-Note: molecules will still move around but stay spread out.
http://bio.winona.edu/berg/Free.htm
Simple Diffusion Animation
![Page 6: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/6.jpg)
2. Facilitated diffusion: diffusion of specific particles through transport proteins found in the membrane.
Uses:
a. Channel proteinsand / or
b. Carrier proteins
Facilitated diffusion (Channel Protein)
Diffusion (Lipid
Bilayer)
Passive Transport: 2. Facilitated Diffusion
Carrier Protein
A B
• http://bio.winona.edu/berg/Free.htm
![Page 7: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/7.jpg)
High Concentration
Low Concentration
Cell Membrane
Glucosemolecules
Proteinchannel
Passive Transport: 2. Facilitated Diffusion
Go to Section:
Transport Protein
Through a
Cellular Transport From a-High
Low
• Channel Proteins animations
![Page 8: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/8.jpg)
• 3.Osmosis: diffusion of water through a selectively permeable membrane
• Water moves from high to low concentrations
•Water moves freely through pores.
•Solute (green) too large to move across.
Osmosis animationPassive Transport: 3. Osmosis
![Page 9: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/9.jpg)
Active Transport
•cell uses energy
•actively moves molecules to where they are needed
•Movement from an area of low concentration to an area of high concentration
•(Low High)
•Three Types:
![Page 10: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/10.jpg)
Types of Active Transport
1. Protein Pumps -carrier proteins that require energy to do work
•Example: Sodium / Potassium Pumps are important in nerve responses.
Sodium Potassium Pumps (Active Transport using proteins)
CarrierProtein changes shape to
move molecules: this requires energy!
![Page 11: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/11.jpg)
Types of Active Transport
• 2. Endocytosis: taking bulky material into a cell • Uses energy• Cell membrane in-folds
around food particle• “cell eating”• forms food vacuole &
digests food• This is how white blood
cells eat bacteria!
![Page 12: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/12.jpg)
Types of Active Transport
3. Exocytosis: Forces material out of cell in bulk• membrane surrounding the
material fuses with cell membrane
• Cell changes shape – requires energy
• EX: Hormones or wastes released from cell
Endocytosis & Exocytosis animations
![Page 13: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/13.jpg)
Effects of Osmosis on Life
• Osmosis- diffusion of water through a selectively permeable membrane
• Water is so small and there is so much of it the cell can’t control it’s movement through the cell membrane.
![Page 14: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/14.jpg)
Hypotonic Solution
Hypotonic: The solution has a lower concentration of solutes and a higher concentration of water than inside the cell. (Low solute; High water)
Result: Water moves from the solution to inside the cell): Cell Swells and bursts open
• Osmosis Animations for isotonic, hypertonic, and hypotonic solutions
![Page 15: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/15.jpg)
Hypertonic Solution
Hypertonic: The solution has a higher concentration of solutes and a lower concentration of water than inside the cell. (High solute; Low water)
Result: Water moves out of the cell into the solution: Cell shrinks.
• Osmosis Animations for isotonic, hypertonic, and hypotonic solutions
shrinks
![Page 16: Cellular Transport Notes Ch. 8.1. Types of Cellular Transport Passive Transport cell doesn’t use energy 1.Diffusion 2.Facilitated Diffusion 3.Osmosis.](https://reader036.fdocuments.in/reader036/viewer/2022062307/551c3377550346ea388b4595/html5/thumbnails/16.jpg)
Isotonic SolutionIsotonic: The concentration of solutes in the solution is equal to the concentration of solutes inside the cell.
Result: Water moves equally in both directions and the cell remains same size! (Dynamic Equilibrium)
• Osmosis Animations for isotonic, hypertonic, and hypotonic solutions