Cell Membranes
- Cells are surrounded by biological membranes.
- All membranes have the same basic structure that of a phosopholipid layer containing proteins and carbohydrates.
- Some organelles found in Eukaryotic cells also have membranes.
- What are the functions of the Membrane?
<> To separate the contents of the cell from the surrounding environment. And this allows homeostasis. For example:
--> Cell (surface) membrane separates the cell’s internal content from it’s environment.
--> Organelle membranes separate the contents of the organelles from the cell environment.
<> To control the movement of substances that move through them. Biological membranes are described as selectively permeable or partially permeable membranes, this means that they allow larger molecules such as glucose, amino-acids, fatty acids, glycerol and ions to diffuse in by the use of proteins which are highly selective to control what substances are coming through.
<> Cell membranes are involved in communications.
UNDER CONSTRUCTION
- All membranes have the same basic structure that of a phosopholipid layer containing proteins and carbohydrates.
- Some organelles found in Eukaryotic cells also have membranes.
- What are the functions of the Membrane?
<> To separate the contents of the cell from the surrounding environment. And this allows homeostasis. For example:
--> Cell (surface) membrane separates the cell’s internal content from it’s environment.
--> Organelle membranes separate the contents of the organelles from the cell environment.
<> To control the movement of substances that move through them. Biological membranes are described as selectively permeable or partially permeable membranes, this means that they allow larger molecules such as glucose, amino-acids, fatty acids, glycerol and ions to diffuse in by the use of proteins which are highly selective to control what substances are coming through.
<> Cell membranes are involved in communications.
UNDER CONSTRUCTION