Question

question 1 (1 point)
which of the following is an isomer of glucose?
fructose
sucrose
cellulose
lactose
maltose

Explanation:

Isomers have the same molecular formula but different structural arrangements. Glucose has the molecular formula $\text{C}_6\text{H}_{12}\text{O}_6$. Fructose shares this formula but has a different structure (a ketose instead of glucose's aldose structure). Sucrose, lactose, maltose are disaccharides (molecular formula $\text{C}_{12}\text{H}_{22}\text{O}_{11}$), and cellulose is a polysaccharide with a repeating $\text{C}_6\text{H}_{10}\text{O}_5$ unit, so they do not match glucose's formula.

Answer:

fructose