1. Which of the following statements about the plasma membrane is TRUE?
a) The components of thebilayer are distributed symmetrically.
b) Cholesterol is never apart of the membrane.
c) The plasmamembrane is completely permeable to Ca2+ .
d) Proteins may move inthe plane of the membrane
2. Which of the following must move out of the nucleus to be used for its cellular function?
a) Histones
b) ribosomes
c) RNA polymeraseII
d) the general transcription factorTFIID