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.