Draw and label the parts of the cell membrane.

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Draw and label the parts of the cell membrane. What is the function of proteins in the cell membrane? Two molecules that can cross the lipid bilayer without help from membrane proteins are O2 and CO2. What property allows this to occur? What is the role of cholesterol in the cell membrane? Where do you find cholesterol in the membrane? Why? What is the role of carbohydrates in cell membranes? Why is a transport protein needed to move water molecules rapidly and in large quantities across a membrane?

What does it mean that the cell membrane is selectively permeable? What is the fluid mosaic model?

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