Presentation is loading. Please wait.

Presentation is loading. Please wait.

Cell Membrane Structure

Published bySiska Tanuwidjaja Modified over 5 years ago

Similar presentations

Presentation on theme: "Cell Membrane Structure"— Presentation transcript:

1 Cell Membrane Structure

2 Cell Membrane (aka. Plasma membrane)
semi-permeable fluid portion is a double layer of phospholipids, called the phospholipid bilayer

3 Phospholipid bilayer Phospholipids contain a polar hydrophilic (likes water) head hydrophobic (hates water) tail and a non-polar

4 Proteins embedded in membrane serve different functions
regulate movement of substance form small openings for molecules to diffuse through Transport Proteins Channel Proteins

5 Receptor Proteins Recognize and binds to substances outside the cell.

6 Cell-Surface Markers Made of carbohydrates used to identify cell types.

7 Jobs of the cell membrane:
Separate the internal from external Regulate the exchange of substances Communicate with other cells Identification

Download ppt "Cell Membrane Structure"

Similar presentations

Cell membranes are composed of two phospholipid layers.

Cell membranes are composed of two phospholipid layers.
 Objective Here!.  Where do you find roads without vehicles, forests without trees, and cities without houses?

 Objective Here!.  Where do you find roads without vehicles, forests without trees, and cities without houses?
The Plasma Membrane aka the cell membrane

The Plasma Membrane aka the cell membrane
The Cell (aka Plasma) Membrane intro mini-movie intro mini-movie.

The Cell (aka Plasma) Membrane intro mini-movie intro mini-movie.
Chapter 7: Cells.  1) Regulates what goes in and out  (selectively permeable- some molecules too large or too strongly charged to cross while others.

Chapter 7: Cells.  1) Regulates what goes in and out  (selectively permeable- some molecules too large or too strongly charged to cross while others.
Cell Membrane. Function of Cell Membrane  Separates the cell’s contents from materials outside the cell  Regulates what moves in and out of a cell 

Cell Membrane. Function of Cell Membrane  Separates the cell’s contents from materials outside the cell  Regulates what moves in and out of a cell 
The Cell Membrane 1 Cell membranes are composed of two phospholipid layers called a phosholipid bilayer. The cell membrane has two major functions: 1.

The Cell Membrane 1 Cell membranes are composed of two phospholipid layers called a phosholipid bilayer. The cell membrane has two major functions: 1.
The Plasma (Cell) Membrane. Plasma Membrane Maintaining Balance Separates living cell from nonliving environment Allows flow of nutrients into and out.

The Plasma (Cell) Membrane. Plasma Membrane Maintaining Balance Separates living cell from nonliving environment Allows flow of nutrients into and out.
Plasma Membrane: Structure & Function Objective 2.03: Maintenance of Homeostasis Movement Into & Out of the Cell.

Plasma Membrane: Structure & Function Objective 2.03: Maintenance of Homeostasis Movement Into & Out of the Cell.
3.3 Cell Membrane KEY CONCEPT The cell membrane is a barrier that separates a cell from the external environment.

3.3 Cell Membrane KEY CONCEPT The cell membrane is a barrier that separates a cell from the external environment.
Starter 1.What are the two categories of cells? 2.How are they different? 3.What are examples of each?

Starter 1.What are the two categories of cells? 2.How are they different? 3.What are examples of each?
The Plasma Membrane. The cell membrane functions as a semi- permeable barrier: The cell membrane functions as a semi- permeable barrier: allows a few.

The Plasma Membrane. The cell membrane functions as a semi- permeable barrier: The cell membrane functions as a semi- permeable barrier: allows a few.
Learning Goal: Identify the major components of a cell membrane.

Learning Goal: Identify the major components of a cell membrane.
3.3 Cell Membrane KEY CONCEPT The cell membrane is a barrier that separates a cell from the external environment.

3.3 Cell Membrane KEY CONCEPT The cell membrane is a barrier that separates a cell from the external environment.
The Structure of the Plasma Membrane. Membrane Structure The plasma membrane is 8 nm thick. It is mainly made up of phospholipids and proteins.

The Structure of the Plasma Membrane. Membrane Structure The plasma membrane is 8 nm thick. It is mainly made up of phospholipids and proteins.
Do Now! Brainstorm: What parts of a house separate it from it’s external environment? What may enter through those parts?

Do Now! Brainstorm: What parts of a house separate it from it’s external environment? What may enter through those parts?
Plasma Membrane  aka – Cell membrane  Separates the interior of ALL cells from the outside environment  Protects the cell.

Plasma Membrane  aka – Cell membrane  Separates the interior of ALL cells from the outside environment  Protects the cell.
Membranes Biology 11. Plasma Membrane: the outer boundary of a cell that encloses the cells contents.

Membranes Biology 11. Plasma Membrane: the outer boundary of a cell that encloses the cells contents.
3.3 Cell Membrane TEKS 3E, 4B, 9A KEY CONCEPT The cell membrane is a barrier that separates a cell from the external environment.

3.3 Cell Membrane TEKS 3E, 4B, 9A KEY CONCEPT The cell membrane is a barrier that separates a cell from the external environment.
Plasma Membrane  Responsible for homeostasis. Plasma membrane Thin, flexible boundary between a cell and its environment. Allows nutrients in and allows.

Plasma Membrane  Responsible for homeostasis. Plasma membrane Thin, flexible boundary between a cell and its environment. Allows nutrients in and allows.

Similar presentations

Ads by Google