Some types of syrup are almost entirely made of glucose molecules. If Kelly ate some syrup like this, what would happen to her ability to exercise? It would be easier for her to exercise because glucose moves through the circulatory system faster than other food molecules usually do.

Nothing would happen to her ability to exercise, but her respiratory system would not work as hard, since glucose has more energy than oxygen molecules.

Nothing would happen to her ability to exercise, but her digestive system would not work as hard, since glucose is already small enough to get to her cells.

It would be harder for her to exercise because her digestive system would need to use more enzymes to combine the glucose molecules together.