Monosaccharides are simple sugars that are used primarily as a form of energy for the organisms that consume them. Glucose, which is present in many different types of foods around the world, is the most common type of m... More »

A monosaccharide is a simple sugar whereas a polysaccharide consists of chains of monosaccharides or disaccharides bonded together. Both types of molecules are sugars that can be used by organisms as sources of energy. More »

The monosaccharides glucose and fructose join together to make up sucrose, which is a disaccharide. Sucrose's chemical structure contains a glucose ring and a fructose ring, which are connected by an acetal oxygen bridge... More »

The mitochondria found within the membrane of cells is the organelle that converts sugars into energy. The process, called aerobic cellular respiration, uses sugars and oxygen to create a chemical energy called adenosine... More »

Carbon constitutes the sixth-most-abundant element in the universe, accounts for 20 percent of the weight of almost all living organisms, and makes up roughly 0.04 percent of the Earth's atmosphere in the form of carbon ... More » Science Chemistry

Nitrogen is used by organisms in the form of nitrate to build DNA and RNA, and to construct amino acids. Commercially, nitrogen is used in the creation of steel and electronics. More »

Freezing water is an exothermic process because there is a release of energy into the environment in the form of heat. In an exothermic reaction, the change in enthalpy or measure of heat content, is negative. More »