Question

in a phospholipid, which components constitute the hydrophilic head? select the correct answer below: amino alcohol - modified phosphate, ester groups, and glycerol fatty acid and glycerol phosphate and fatty acid only the amino alcohol that modifies the phosphate group

Explanation:

A phospholipid has a hydrophilic (water - loving) head and hydrophobic (water - fearing) tails. The hydrophilic head is composed of a glycerol backbone, a phosphate group, and an amino alcohol - modified phosphate. The ester groups are part of the connection between the glycerol and fatty acids (which are part of the hydrophobic tails). Fatty acids are hydrophobic (so options with fatty acid as part of the hydrophilic head are wrong). Glycerol alone (without the phosphate and amino - alcohol modified phosphate) is not the hydrophilic head.

Answer:

amino alcohol - modified phosphate, ester groups, and glycerol