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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.
In general, a molecule's size and polarity decides whether it can pass through the bilayer... Lipid bilayer of the cell membrane is composed of phospholipids, which are amphiphilic (that is contains both the hydrophobic and hydrophilic ends). The hydrophilic ends points or heads outwards from the bilayer, whereas the hydrophobic tails point inwards (And towards each other).