Concept:Complex carbohydrates are polysaccharides consisting of many sugar units, whereas simple carbohydrates contain only one or two sugar units.
Explanation:Glycogen, cellulose, and starch are all polysaccharides.
Each is built from many repeating monosaccharide units.
Thus, each one qualifies as a complex carbohydrate.
Glycogen is the animal storage form of glucose.
Cellulose is a structural polysaccharide found in plant cell walls.
Starch is the plant storage polysaccharide.
Glucose, on the other hand, is a monosaccharide with the formula
C6H12O6.
It exists as a single sugar unit, not as a long polymer chain.
Therefore, glucose does not belong to the group of complex carbohydrates.
The substance that is not a complex carbohydrate is glucose.
Answer:D. Glucose