COMPONENTS OF CELL MEMBRANE AND ITS FUNCTIONS

LL MEMBRANE AND ITS FUNCTIONS

1. LIPIDS -main fabric of the membrane

2. PROTEINS

3. PROTEINS INTEGRAL PROTEIN Channels or pumps to transport molecules across the membrane Transport of substance through membrane Receptor function, cell adhesion, structural support PERIPHERAL PROTEINS Attached to the membrane surface, either inside or outside . Cell recognition

4. RECEPTOR PROTEINS- act as cellular communicators, receiving and responding to signals form the environment CHANNEL PROTEINS- create pores or channels through the membrane, allowing specific molecules to pass through/ form pores that allow specific ions to diffuse across the membrane CARRIER PROTEINS- bind to molecules, change shape, and release the molecule on the other side of the membrane

5. CARBOHYDRATES

6. CARBOHYDRATES - Cell recognition markers and receptor sites for signaling molecules

7. CHOLESTEROL

8. Plasma membranes have many roles. One of the roles of the plasma membrane is to help the cell maintain homeostasis. Which statements best supports this role? A. The plasma membrane is made up of different proteins. The plasma membrane contains two layers of phospholipids. The plasma membrane controls the movement of materials in and out of the cell. The plasma membrane is made of a polar region and a nonpolar region.

9. What materials make up the channels and pumps of the cell membrane? Carbohydrate C . Protein Lipid D. Nucleic acid