Biological Membranes Practice Problems

This cell structure is semi-permeable and separates the inside of the cell from the environment:

The purpose of this macromolecule in the plasma membrane is to provide stability in the face of changing temperatures:

This macromolecule is required for the maintenance of the integrity and fluidity of the plasma membrane:

Which structure of the plasma membrane facilitates the transport of specific substances across the membrane?

The members of the endomembrane system are:

Which of the following statements about the nature of plasma membrane is true?