Based on the descriptions provided, the correct names of the biomolecules are:
- Phospholipids - "it consists of hydrophilic chains as well as a hydrophobic region"
- Phospholipids - "it forms the plasma membrane of cells"
Both descriptions refer to phospholipids, which are critical components of cell membranes due to their amphiphilic nature (having both hydrophilic and hydrophobic regions).