three processes that occur in cells are described.
- substances pass through the lipid bilayer of a cell from areas of concentration to areas of low concentration
- substances move through proteins channels of the lipid bilayer of a cell from areas of high concentration to areas of low concentration
- substances move through the lipid bilayer of a cell from areas of low concentration to areas of high concentration.
these processes are all examples of -
a. crossing over
b. the migration of genetic material
c. selective permeability
d. cellular energy use.