Final answer:
Amphipathic alpha helices embed within a lipid bilayer through their unique structure and properties, with their hydrophobic amino acid residues interacting with the hydrophobic region of the lipid bilayer. This allows the helix to be partially embedded in the bilayer, holding it in place.
Step-by-step explanation:
Amphipathic alpha helices embed within a lipid bilayer through their unique structure and properties. The hydrophobic amino acid residues of the helix interact with the hydrophobic region of the lipid bilayer, while the hydrophilic residues face the surrounding water.
This allows the helix to be partially embedded in the bilayer, holding it in place. The amphipathic nature of the helix is essential for its interaction with the lipid bilayer and its stability within the membrane.