What are you talking about? Glucose and fructose is all you'll find. It might be sucrose, but it is all the same by weight and effect once it hits your stomach.
Like a famous case is fibre in food, disallows the benefits of zinc.
You might want to check this: http://www.britannica.com/EBchecked/topic/571880/sugar
Additionally, how you can also see this is, the difference in sugar concentration, means that though the amount is large, it is still not the same. sugar is a very broad term, as you may find from the above article.
If this is a genuine school project, that it is good for that general age.