Question
By mass, cholesterol composes about ____.
Answer
By mass, cholesterol composes about 20 percent of the cell membrane; by mole fraction, it makes up about half.
Note: This large ratio of cholesterol to phospholipid ensures that the membrane remains fluid.
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The cell ( plasma ) membrane is often described as ____.
The cell membrane permits ____ compounds to cross easily
The theory that underlies the structure and function of the cell membrane is referred to as the ____.
The phospholipid bilayer also includes proteins and distinct signaling areas within ____.
Carbohydrates associated with membrane-bound proteins create a ____.
____ create a glycoprotein coat .