The more common form of glucose has a ring structure. This is
This is beta-D-glucose:
Sucrose is a disaccharide
derived from glucose and fructose (it is essentially glucose and fructose
connected by an acetal linkage). It is one of the only natural chemicals that
are consumed by humans in unmodified form (like water and NaCl). It is broken down by
enzymes in the body to give glucose, which is then diffused into the cells to
give the body energy.