Review the ball-and-stick models of organic molecules. How can you tell the difference between between the glucose chain and the fructose chain?
The glucose chain contains 6 carbons, while the fructose chain contains only 3.
The glucose chain contains an aldehyde functional group, while the fructose chain contains a ketone functional group.
The glucose chain contains 1 double bond, while the fructose chain contains 2 double bonds.