What is glucose?

Answer 1

== Answer 1==

It is a carbohydrate(*)/sugar. It is in both plants as a result of photosynthesis and in the human body as well. Glucose is a sugar found in the bloodstream and is the body's main source of energy. Pure glucose is a solid, and will therefore not evaporate(**). If it is in a solution (glucose dissolved in water for instance), then the water can evaporate, but not the glucose itself. (***)

Glucose a monosaccharide (simple sugar) with formula C6H12O6 or H-(C=O)-(CHOH)5-H, whose five hydroxyl (OH) groups are arranged in a specific way along its six-carbon backbone.

Further related definitions:

Sucrose is an organic compound commonly known as table sugar, sometimes called saccharose. At room temperature it is a white, odorless, crystalline powder. The sucrose molecule is a disaccharide composed of the monosaccharides glucose and fructose, and has a molecular formula C12H22O11.

(*) A carbohydrate is any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose. They contain hydrogen and oxygen in the same ratio as water (2:1) and typically can be broken down to release energy in the animal body.

(**) Some solids can evaporate; the process of a material going directly from the solid phase to the vapor phase (and not going through a liquid phase) is called sublimation. Frozen carbon dioxide (dry ice) undergoes sublimation; under normal temperatures and pressures, it never enters a liquid form.

(***) the author is saying that glucose is not volatile, ie won't boil away or evaporate off like water.

Answer 2

Glucose is a simple sugar that serves as the primary source of energy for our bodies. It is found in various foods and is also produced by the body during the digestion of carbohydrates. Glucose is transported in the bloodstream to cells where it is used for energy production.