Question: what type of chemical reactions do digestive enzymes catalyze

title: Enzyme
text: An important function of enzymes is in the digestive systems of animals . Enzymes such as amylases and proteases break down large molecules ( starch or proteins , respectively ) into smaller ones , so they can be absorbed by the intestines . Starch molecules , for example , are too large to be absorbed from the intestine , but enzymes hydrolyze the starch chains into smaller molecules such as maltose and eventually glucose , which can then be absorbed . Different enzymes digest different food substances . In ruminants , which have herbivorous diets , microorganisms in the gut produce another enzyme , cellulase , to break down the cellulose cell walls of plant fiber . 

Answer: answer: Enzymes such as amylases and proteases break down large molecules (starch or proteins, respectively) into smaller ones, so they can be absorbed by the intestines. Enzymes hydrolyze the starch chains into smaller molecules such as maltose and eventually glucose, which can then be absorbed. In ruminants, which have herbivorous diets, microorganisms in the gut produce another enzyme, cellulase, to break down the cellulose cell walls of plant fiber.