"There are three classes of enzymes: metabolic enzymes, which run our bodies; digestive enzymes, which digest our food; and food enzymes from raw foods, which start food digestion. Our bodies are run using metabolic enzymes. Enzymes convert the food we eat into chemical structures that can pass through the cell membranes of the cells lining the digestive tract into the bloodstream."
Enzymes: are proteins that act as catalysts in mediating and speeding up a specific chemical reaction.Check out this link on the "wisegeek" website:
http://www.wisegeek.com/what-are-enzymes.htm
It suggests that there are an estimated 75,000 human enzymes.
Quoted using http://www.fruitarian.com/ac/Enzymes.htm and Donovan
its a stuffed up question and no one shoud be put threw this stuff in science heheh :)