Galactose| A simple sugar which combines with glucose to form lactose, or milk sugar.|Galactose.swf\Glucose| Glucose is a simple sugar and is the body's primary source of energy.  Although carbohydrates provide the majority of glucose for the body, protein and fat are also broken down into this simple sugar. The cells use insulin, a hormone produced by the pancreas, to help them utilize glucose.|Glucose.swf\