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The ________ of a phospholipid molecule will seek water, whereas the ________ of the molecules will avoid water. Answer a. tail; head b. head; tail c. hydrophobic portion; hydrophilic portion d. fatty acid; phosphate group.Follow. 3 answers 3..head; tail hydrophobic tails and a hydrophilic head. It is usually found with cholesterol molecules which are found in-between the spaces of the phospholipid.
The phospholipids organize themselves in a bilayer to hide their hydrophobic tail regions and expose the hydrophilic regions to water. This organization is spontaneous, meaning it is a natural process and does not require energy. This structure forms the layer that is the wall between the inside and outside of the cell.nly water and gases can easily pass through the bilayer. This property means that large molecules and small polar molecules cannot cross the bilayer, and thus the cell membrane, without the assistance of other structures. 1  1. 2  2.