In impaired glucose tolerance (IGT), the levels of blood glucose are between normal and diabetic. People with IGT do not have diabetes. Each year, only 1-5% of people whose test results show IGT actually develop diabetes. And with retesting, as many as half of the people with IGT have normal oral glucose tolerance test results. Weight loss and exercise may help people with IGT return their glucose levels to normal. With diet and exercise as many as 60% will not developed diabetes or it will be considerably slowed in its development.
Reaction rates, temperature and catalysis. 1  As learned in previous modules, the rate of a reaction is increased by using a catalyst or increasing the temperature. 2  The effect of using a catalyst and increasing the temperature can be explained using the collision theory. The collision theory of reactions. The basic principle of the collision theory is that chemicals react when their particles collide with a certain minimum energy.
A catalyst is a chemical substance that affects the rate of a chemical reaction by altering the activation energy required for the reaction to proceed. This is called catalysis. A catalyst is not consumed by the reaction and it may participate in multiple reactions at a time. The only difference between a catalyzed reaction and an uncatalyzed reaction is that the activation energy is different. There is no effect on the energy of the reactants or the products.