text: identify the major types of chemical reactions important for studying the human body?   there are so many its hard to start. the most important would be (and this is only an opinion) :  enzyme based reactions  oxidation reactions (burning your food to make energy)  oxygenation of the blood  nerve impulse tranfer chemisty  protein synthesis reactions  cell growth mechanisms  control of blood sugar  toxin metabolism and control  there are an awful lot of these, i could go on and on : the body needs pretty much all of its chemistry. tough question.