Shoe Inserts and Prescription Custom Orthotics. You've seen them at the grocery store and at the mall. You've probably even seen them on TV and online. Shoe inserts are any kind of non-prescription foot support designed to be worn inside a shoe. Pre-packaged arch supports are shoe inserts. So are the âcustom-madeâ insoles and foot supports that you can order online or at retail stores. Unless the device has been prescribed by a doctor and crafted for your specific foot, it's a shoe insert, not a custom orthotic deviceâdespite what the ads might say.
The membrane of a cell is basically made up of a mixture of lipids  and proteins. The other components of a membrane of a cell are  phospholipids and glycoproteins.3 people found this useful.ost of the cell membrane are made up of proteins and  phospholipids. The phospholipids make up the basic cell body, with  tiny holes scattered around. It is not a solid pie â¦ ce.
Answers: The cell membrane is composed of a phospholipid bilayer. Facing both the extra and cytoplasmic sides of the cell are the hydrophilic heads. The hydrophobic tails of the phospholipids are clustered inside. Various proteins, sterols (e.g. cholesterol), lipids and carbohydrates are embedded in the plasma membrane.Some are peripheral, and are only one side of the membrane. Others are transmembrane. The cell membrane has various functions: Provides a semipermeable barrier for the cell from the outside world.nswers: The cell membrane is composed of a phospholipid bilayer. Facing both the extra and cytoplasmic sides of the cell are the hydrophilic heads. The hydrophobic tails of the phospholipids are clustered inside. Various proteins, sterols (e.g. cholesterol), lipids and carbohydrates are embedded in the plasma membrane.