Which of the following best describes the relationship between glucose and fructose?

Glucose and fructose are both simple sugars, also known as monosaccharides. They share the same molecular formula (C6H12O6), but they have different structural arrangements. This makes them isomers of each other.

In terms of their relationship in the human body, both glucose and fructose are sources of energy. Glucose is the primary energy source for cells, while fructose is converted into glucose in the liver before it can be used for energy.

In terms of sweetness, fructose is generally sweeter than glucose.

They are both found naturally in fruits and are components of high fructose corn syrup and table sugar (sucrose), which is a disaccharide composed of glucose and fructose.

So, in summary, glucose and fructose are closely related simple sugars that serve as energy sources in the body, but they differ in their structure, sweetness, and the way they are metabolized.