Plasma Membrane [7.2]

Goals:

• Understand the concept of homeostasis in relation to the plasma membrane

• Demonstrate and understand how the plasma membrane regulates movement into and out of the cell

SPI 1 Identify the cellular organelles associated with major cell processes.SPI 7 Predict the movement of water and other molecules across selectively permeable membranes.

• The structure of the plasma membrane allows control over what leaves and enters the cell (selective permeability)• The plasma membrane is

a phospholipid bilayer: it’s two sheets of phospholipids stuck together like a sandwich• The cell membrane

contains cholesterol, proteins, and carbohydrates.