Assertion: The phospholipids of cell membrane are amphipathic.
Reason: Each phospholipid molecule has a polar head and a non-polar tail with only one saturated hydrocarbon chain.
The phospholipids of cell membrane are amphipathic as they have polar head towards the aqueous environment and non-polar hydrophobic tail with two saturated hydrocarbon chains towards the inner part and protected or unexposed to aqueous environment.