Identify the best description of the arrangement of the plasma membrane phospholipid layers.
1-The hydrophilic parts of the phospholipids line up in the interior of the membrane and the hydrophobic parts are exposed on the inner and outer surfaces of the membrane
2-The polar "heads" line up in the interior of the membrane and nonpolar "tails" are exposed on the inner and outer surfaces of the membrane.
3-The polar "tails" line up in the interior of the membrane and nonpolar "heads" are exposed on the inner and outer surfaces of the membrane.
4-The hydrophobic parts of the phospholipids line up in the interior of the membrane and hydrophilic parts are exposed on the inner and outer surfaces of the membrane
