Presentation is loading. Please wait.

Presentation is loading. Please wait.

 The Phospholipid Bilayer.  Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf.

Published byLaura Carr Modified over 9 years ago

Similar presentations

Presentation on theme: " The Phospholipid Bilayer.  Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf."— Presentation transcript:

1  The Phospholipid Bilayer

2  Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf  The Plasma Membrane - Mahalo Professor The Plasma Membrane - Mahalo Professor  Osmosis and Facilitated diffusion Osmosis and Facilitated diffusion

3 CELL MEMBRANE 10. Cell Membrane SEMIPERMEABLE – ‘picky’ ○ Selectively permeable Phospholipid Bilayer ○ Hydrophobic tail ○ Hydrophilic head

4 The Cell Membrane AKA Phospholipid Bilayer, Plasma Membrane  It is selectively permeable – Letting only certain substances through  Why?  1. If they fit between the links of the membrane  2. If a concentration gradient is there  3. If they can mix with the membrane parts.

5

6 Explanation  In the previous slide, I found images of different particles that either make up the membrane or need to get through it.  Once I had the atoms the same size I shrunk them by the same amount so you could see what we mean when we say that a particle *won’t fit* through the membrane.

7

8 1. If they fit:

9

10 2. If there is a Concentration Gradient:

11 3. If they mix with the membrane Oil Fire advice from a victim Foreign Launguage but display of how to put out an oil fire Super hydrophobic spray water and oj

12  Pearson Book Lab with animations - do together Pearson Book Lab with animations - do together  Amazing Book Lab - PLEASE Print your journal answers and the table of results Amazing Book Lab - PLEASE Print your journal answers and the table of results

13 The Cell Membrane AKA Phospholipid Bilayer, Plasma Membrane  If a cell needs a substance in it (like food) but the particle is too big, the particle may need a “doorway” to help it through or the cell may need to use energy to move it.  THIS IS CALLED FACILITATED DIFUSION or ACTIVE TRANSPORT

14

15 Active Transport  If a molecule is REALLY too big, Energy must be used to move it across the membrane.  If a molecule is at a lower concentration, energy must be used to move it.  http://www.youtube.com/watch?v=STzOiRqzzL4 http://www.youtube.com/watch?v=STzOiRqzzL4  http://www.youtube.com/watch?v=Kd3LorZcJew&feature =endscreen http://www.youtube.com/watch?v=Kd3LorZcJew&feature =endscreen

16

Download ppt " The Phospholipid Bilayer.  Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf Diffusion with water and Red Dye, OSMOSIS in a lettuce leaf."

Similar presentations

Cell Membrane Controls what materials enter or leave the cell Also called the phospholipid bilayer Heads are hydrophilic(“water loving”) They attract.

Cell Membrane Controls what materials enter or leave the cell Also called the phospholipid bilayer Heads are hydrophilic(“water loving”) They attract.
4.1 Plasma Membrane Structure and Function

4.1 Plasma Membrane Structure and Function
The Plasma Membrane.

The Plasma Membrane.
Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)

Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)
Structure and Function

Structure and Function
Active and Passive Transport !!!. The Fluid Mosaic Model  The cell membrane is also called the plasma membrane and is made of a phospholipid bilayer.

Active and Passive Transport !!!. The Fluid Mosaic Model  The cell membrane is also called the plasma membrane and is made of a phospholipid bilayer.
Cell Membrane.

Cell Membrane.
1 Cell Membrane controls Homeostasis ___________It balances the ___________ and _________ of the cell. ___________ is maintained by plasma membrane controlling.

1 Cell Membrane controls Homeostasis ___________It balances the ___________ and _________ of the cell. ___________ is maintained by plasma membrane controlling.
The Cell Membrane & Transport The Cell Membrane The cell membrane is a skin-like structure surrounding the cytoplasm serving as a barrier to the cell’s.

The Cell Membrane & Transport The Cell Membrane The cell membrane is a skin-like structure surrounding the cytoplasm serving as a barrier to the cell’s.
CHAPTER 5 The Working Cell Energy and ATP, Transport, and Enzymes.

CHAPTER 5 The Working Cell Energy and ATP, Transport, and Enzymes.
Cells and Their Environment. Hooke and van Leeuwenhoek postulated: 1. All living things are composed of cells 2. Cells are the basic unit and function.

Cells and Their Environment. Hooke and van Leeuwenhoek postulated: 1. All living things are composed of cells 2. Cells are the basic unit and function.
Let’s look at one example involving osmosis. Osmosis is the diffusion of water across a semi permeable membrane such as a cell membrane. A semi permeable.

Let’s look at one example involving osmosis. Osmosis is the diffusion of water across a semi permeable membrane such as a cell membrane. A semi permeable.
Please set up your notebook for Cornell Notes. Cell membrane (plasma membrane)  Regulates the movement of materials into and out of the cell (selectively.

Please set up your notebook for Cornell Notes. Cell membrane (plasma membrane)  Regulates the movement of materials into and out of the cell (selectively.
The Cell Membrane 1 Gateway Across the Cell. Functions of Plasma Membrane 2  Protective barrier Regulate transport in & out of cell (selectively permeable)

The Cell Membrane 1 Gateway Across the Cell. Functions of Plasma Membrane 2  Protective barrier Regulate transport in & out of cell (selectively permeable)
Cell Transport Notes. All cells have a cell membrane made of proteins and lipids Cell Membrane lipid bilayer protein channel protein pump Layer 1 Layer.

Cell Transport Notes. All cells have a cell membrane made of proteins and lipids Cell Membrane lipid bilayer protein channel protein pump Layer 1 Layer.
Warm up The cell membrane is called phospholipid bilayer. – What is a phospholipid? – Which part of the phospholipid is hydrophobic? – Which part of the.

Warm up The cell membrane is called phospholipid bilayer. – What is a phospholipid? – Which part of the phospholipid is hydrophobic? – Which part of the.
Units GoalsAnalyze the nature of the relationships between structures and functions in living cells. 1.Explain the role of cell organelles for both prokaryotic.

Units GoalsAnalyze the nature of the relationships between structures and functions in living cells. 1.Explain the role of cell organelles for both prokaryotic.
The Plasma Membrane Structure and function. The phospholipid bilayer  2 layers of phospholipid molecules –“head” is hydrophylic –“tail” is hydrophobic.

The Plasma Membrane Structure and function. The phospholipid bilayer  2 layers of phospholipid molecules –“head” is hydrophylic –“tail” is hydrophobic.
Unit 2 – The cell membrane Biology. Plasma Membrane It protects and supports the cell and also controls everything that enters and leaves the cell. Selective.

Unit 2 – The cell membrane Biology. Plasma Membrane It protects and supports the cell and also controls everything that enters and leaves the cell. Selective.
Cell Membrane and Cell Transport. Molecular Structure of the Cell Membrane.

Cell Membrane and Cell Transport. Molecular Structure of the Cell Membrane.

Similar presentations

Ads by Google