AP BIOLOGY

Detailed explanation-1: -Simple lipids are made up of glycerol and fatty acid. If these fatty acids do not contain any double and triple bonds, are called saturated fatty acids. In animal lipids mostly saturated fatty acids are found. Some examples of animal lipids are dairy products, beef, pork meat, and egg.

Detailed explanation-2: -Lipids are molecules that contain hydrocarbons and make up the building blocks of the structure and function of living cells. Examples of lipids include fats, oils, waxes, certain vitamins (such as A, D, E and K), hormones and most of the cell membrane that is not made up of protein.

Detailed explanation-3: -Fatty acids are the building blocks of the fat in our bodies and in the food we eat. During digestion, the body breaks down fats into fatty acids, which can then be absorbed into the blood. Fatty acid molecules are usually joined together in groups of three, forming a molecule called a triglyceride.

Detailed explanation-4: -Like fats, they are typically composed of fatty acid chains attached to a backbone of glycerol. Instead having three fatty acid tails, however, phospholipids generally have just two, and the third carbon of the glycerol backbone is occupied by a modified phosphate group.

Detailed explanation-5: -Fatty acids rarely occur as free molecules in nature but are usually found as components of many complex lipid molecules such as fats (energy-storage compounds) and phospholipids (the primary lipid components of cellular membranes).