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.
THE EFFECT OF CHANGING CONDITIONS IN ENZYME CATALYSIS This page looks at the effect of changing substrate concentration, temperature and pH on reactions involving enzymes. It follows on from a page describing in simple terms how enzymes function as catalysts.he effect of temperature on the rate of enzyme-controlled reactions A reminder about the effect of temperature on rate in ordinary chemical reactions Remember that for molecules to react, they have to collide with an energy equal to or greater than the activation energy for the reaction.