Phospholipids are molecules that have A. one nonpolar phosphate head and two polar fatty acid tails.
B. one polar phosphate head and one polar fatty acid tail.
C. one polar phosphate head and two polar fatty acid tails.
D. one polar phosphate head and two nonpolar fatty acid tails.

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.