Kevin White (mayor) Kevin Hagan White (September 25, 1929 â January 27, 2012) was a United States politician best known as the Mayor of Boston, an office he was first elected at the age of 38, and that he held for four terms, amounting to 16 years, from 1968 to 1984.
Steroids are a type of lipid that includes hormones and cholesterol. Cholesterol is produced by the body and consumed through food, and it plays a role in the production of hormones.ocated on cell membranes, they form double-layered membranes with the water-soluble molecules on the outside of the cell membrane and the water-insoluble molecules in the inside. These lipids are responsible for protecting and insulating cells.
Major Classes of Compounds in the Human Body. 1  Water: Water is the most abundant chemical compound in living human cells, accounting for 65-90% of each cell. It's also present between cells. 2  Fat: The percentage of fat varies from person to person, but even an obese person has more water than fat.