1 A computer file format for STereoLithography, or Standard Tessellation Language. 2  It describes a physical space mathematically as a series of small triangles using a three-dimensional coordinate system, and is widely used in dentistry.
Phospholipids consist of a polar molecule, a phosphate group, a glycerol unit and two fatty acids. They are found in cell membranes, which enclose the cytoplasm and other parts of a cell. Steroids include cholesterol, cortisone and sex hormones, such as estrogen, testosterone and progesterone. They have a carbon backbone that contains four fused ring-like structures.
How are lipids formed? A: Lipids are organic compounds that can include substances, such as fats, waxes, phospholipids and steroids. Depending on the type of lipid formed, it can consist of different combinations of molecules including fatty acids, glycerol and phosphate group. Triglycerides, which are a type of fat, are made up of three fatty acids and one glycerol molecule, while phospholipids consist of two fatty acids, one glycerol molecule and a phosphate group.