Opal is considered the birthstone for people born in October. Famous opals. The Olympic Australis, the world's largest and most valuable gem opal [citation needed], found in Coober Pedy; The Andamooka Opal, presented to Queen Elizabeth II, also known as the Queen's Opal
1 Carbohydrates â are required for energy. 2  Glucose, which is a monosaccharide, is the most essential source of energy in the body. 3  The brain works entirely on glucose alone. 4  When an immediate source of energy is required, glucose is converted into glycogen which is stored in the liver.
Energy Production. The primary role of carbohydrates is to supply energy to all cells in the body. Many cells prefer glucose as a source of energy versus other compounds like fatty acids.Some cells, such as red blood cells, are only able to produce cellular energy from glucose.nergy Production. The primary role of carbohydrates is to supply energy to all cells in the body. Many cells prefer glucose as a source of energy versus other compounds like fatty acids.