Three processes that occur in cells are described in the box. These processes are all examples of -
A- Crossing over
B- The migration of genetic material
C- Selective permeability
D- Cellular energy use

LOOK AT PICTURE

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer