Answer
The polar groups on one side of the AFP may bind to the ice crystals, while the non polar group prevents other water molecules from bonding to the crystalline structure. This would prevent the cell from freezing.
Work Step by Step
The nonpolar side of the ATP is hydrophobic (it does not interact with water) and, when it binds to ice crystals, it prevents any additional water molecules from creating hydrogen bonds and binding to the ice crystals, preventing it from growing and ensuring that the cell does not freeze.
