what is glucose and where it is found
Glucose is a carbohydrate, meaning that it's composed of the elements carbon, hydrogen and oxygen. It's one of the most common organic, or carbon-based, molecules in nature, and is the primary source of energy for many living organisms. There are many sources of glucose in nature, both in food items and elsewhere.
Insulin is a hormone. It makes our body's cells absorb glucose from the blood. The glucose is stored in the liver and muscle as glycogen and stops the body from using fat as a source of energy. When there is very little insulin in the blood, or none at all, glucose is not taken up by most body cells.