Glycerophospholipids have heads and long fatty acid tails.

A) polar; polar
B) polar; hydrophobic
C) hydrophobic; polar
D) hydrophobic; hydrophobic

Polar; hydrophobic (Ans. B)

Explanation:

Glycerophospholipids are known as the class of lipids which are found extensively in the biological membrane. They are usually consisting two regions of lipids which provide structure to the lipid bilayer in which the hydrophilic heads (polar) attaching outside to the cell and the hydrophobic tails (non-polar) pointing insides to the cell membrane.

Glycerophospholipids helps to provide permeability and fluidity to the membrane and also helps in the programmed cell death, and modulation of actions of membrane-bound enzymes.

the index of refraction of the second medium is higher. i just took the test trust me !