Final answer:
Phospholipids are the only amphipathic molecules among the options provided (water, glucose, steroids, triglycerides, phospholipids). They have a polar head facing towards water and nonpolar fatty acid tails.
Step-by-step explanation:
Phospholipids are amphipathic molecules. The polar head faces towards water and the nonpolar fatty acid tails face towards other fatty acid tails. Unlike water (hydrophilic), phospholipids have both hydrophobic and hydrophilic parts, making them amphipathic. Among the molecules listed, phospholipids are the only one that are amphipathic.