The two sides of a membrane can be split apart from each other by an experimental technique known as freeze-fracturing.When one side of a freeze-fractured membrane is examined under the electron microscope,the exposed interior of the membrane bilayer appears to be covered with bumps.These bumps are most likely
A) integral membrane proteins. B) ice crystals. C) glycolipids. D) organelles. E) vesicles.
Which statement about cholesterol molecules is true?
A) They help hold a membrane together. B) They alter the fluidity of the membrane. C) They attach to carbohydrates. D) They disrupt membrane function. E) They transport ions across membranes.