Presentation is loading. Please wait.

Presentation is loading. Please wait.

Cell Membrane Function- Protection & Controls what enters and leaves the cell Structure- Double layered Phospholipid membrane Selectively Permeable.

Published byHartanti Tanudjaja Modified over 6 years ago

Similar presentations

Presentation on theme: "Cell Membrane Function- Protection & Controls what enters and leaves the cell Structure- Double layered Phospholipid membrane Selectively Permeable."— Presentation transcript:

1 Cell Membrane Function- Protection & Controls what enters and leaves the cell Structure- Double layered Phospholipid membrane Selectively Permeable

2

3

4 Diffusion Process where molecules move from area of high concentration to low concentration to reach equilibrium Cell does NOT use energy for diffusion Examples: water, alcohol, small lipids

5 Osmosis Movement of WATER across a cell membrane
Turgor Pressure- pressure on cell membrane resulting from movement of water Plasmolysis- Water leaves cell; cell shrinks Cytolysis- Water enters cell; cell bursts

6 Solutions Isotonic- Equal solutes Hypotonic- Less solutes
Hypertonic- More solutes

7 Facilitated Diffusion
Molecules move freely through protein channels Examples: Ions, sugars, salts

Download ppt "Cell Membrane Function- Protection & Controls what enters and leaves the cell Structure- Double layered Phospholipid membrane Selectively Permeable."

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.
Cellular Transport Figure 6-12 Both diffusion and facilitated diffusion are forms of passive transport, as neither process requires the cell to expend.

Cellular Transport Figure 6-12 Both diffusion and facilitated diffusion are forms of passive transport, as neither process requires the cell to expend.
The Plasma Membrane - Gateway to the Cell

The Plasma Membrane - Gateway to the Cell
Bellwork How to materials get into and out of the cell?

Bellwork How to materials get into and out of the cell?
Osmosis.  Energy requirements?  No energy required  Modes of passive transport?  Diffusion through cell membrane  The movement of a substance from.

Osmosis.  Energy requirements?  No energy required  Modes of passive transport?  Diffusion through cell membrane  The movement of a substance from.
Osmosis.

Osmosis.
Movement of particles across the cell membrane without using energy

Movement of particles across the cell membrane without using energy
Passive Transport Section 4.1.

Passive Transport Section 4.1.
Microorganisms. Cell Membrane - aka “Plasma Membrane” and “Fluid Mosaic Membrane” -All cells have cell membranes -Functions: a.Controls what enters and.

Microorganisms. Cell Membrane - aka “Plasma Membrane” and “Fluid Mosaic Membrane” -All cells have cell membranes -Functions: a.Controls what enters and.
7:3 Movement Through the Membrane. Cell Membrane Every cell has a cell membrane Regulates what enters and leaves the cell. Provides protection & support.

7:3 Movement Through the Membrane. Cell Membrane Every cell has a cell membrane Regulates what enters and leaves the cell. Provides protection & support.
Cell Transport Osmosis and Diffusion.  Particles in constant motion  Run into each other and randomly spread out  Particles move from an area of high.

Cell Transport Osmosis and Diffusion.  Particles in constant motion  Run into each other and randomly spread out  Particles move from an area of high.
Cellular Transport Passive Transport Movement of molecules across the membrane No energy needed High to low concentration Ex: diffusion, osmosis, facilitated.

Cellular Transport Passive Transport Movement of molecules across the membrane No energy needed High to low concentration Ex: diffusion, osmosis, facilitated.
Diffusion The movement of molecules from an area of high concentration to an area of low. concentration.

Diffusion The movement of molecules from an area of high concentration to an area of low. concentration.
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)
Diffusion (passive transport) Diffusion is the process by which molecules move from areas of high concentration to areas of low concentration.

Diffusion (passive transport) Diffusion is the process by which molecules move from areas of high concentration to areas of low concentration.
I.The Cell Membrane Controls what enters and leaves the cell

I.The Cell Membrane Controls what enters and leaves the cell
Honors Biology.  Activities of a cell depend on materials that enter and leave it  To stay alive a cell must exchange materials (food, oxygen, waste)

Honors Biology.  Activities of a cell depend on materials that enter and leave it  To stay alive a cell must exchange materials (food, oxygen, waste)
Passive Transport Chapter 5 Sec. 1.

Passive Transport Chapter 5 Sec. 1.
Cell Membrane Function Part I. How does the membrane control what enters or leaves the cell? Passive transport (without energy input) -Diffusion -Facilitated.

Cell Membrane Function Part I. How does the membrane control what enters or leaves the cell? Passive transport (without energy input) -Diffusion -Facilitated.
Movement of Materials Through The Cell Membrane For a cell to maintain its internal environment, (i.e., achieve homeostasis) it has to be selective in.

Movement of Materials Through The Cell Membrane For a cell to maintain its internal environment, (i.e., achieve homeostasis) it has to be selective in.

Similar presentations

Ads by Google