Glucose is a simple sugar made up of a carbon, hydrogen, and oxygen. what kind of molecule is glucose?

Glucose falls under aldoses group of monosaccharides which are one of the carbohydrates.

Explanation:

Generally, a molecule formed by combination of carbon, hydrogen and oxygen are termed as carbohydrates. The smallest of the saccharides are mono and disaccharides. The saccharides can contain an aldehyde or a ketone group in their structural formula.

The molecular formula of glucose is C6H12O6. It falls under monosaccharide as the molecular formula of monosaccharides are (CH2nO)n where the n will be 3,5 or 6. So the molecular formula of glucose exactly matches with the molecular formula of monosaccharide family.  

Also, it is known that glucose contains an aldehyde so it can be termed as aldose for being a carbohydrate in monosaccharide family containing aldehyde group.

Glucose is nothing but a type of carbohydrate molecule which is also called as monosaccharides.

Explanation:

They are the smallest unit or simplest part of Carbohydrates which accumulates and join together to make bigger molecules of carbohydrates, Since these are made up of carbon, hydrogen, and oxygen.

These three elements mix together in given parts to make this smallest part of Carbohydrates or sugar. The Other bigger carbohydrates that are formed with these three elements are disaccharides or sucrose.

a:

by the combination of an unlimited number of elements