作者：yoshe watson 16 年以前
400
YOSHE-BIOLOGY-chemical breakdown of food
The human digestive process involves both mechanical and chemical breakdown of food to convert large, insoluble molecules into small, soluble ones that can be absorbed into the bloodstream.
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BIOLOGY-chemical breakdown of food enzymes speed things up an example of a protease enzyme is pepsin an example of a carbohydrate enzyme is amylase fats are broken down into fatty acids and glycerol in the small intestine proteins are broken down into amino acids in the stomach and the small intestine starch is broken down into glucose in the mouth and small intestine lipase breaks down fat molecules carbohydrase breaks down carbohydrate molecules protease breaks down protein molcules enzymes are specific, there are three main enzymes in your system after teeth have chewed up food and stomach has churned food up, food molecules are still too big and insoluble to pass into the bloodstream carbohydrates, proteins and fats are large, insoluble food molecules help with digestion after mechanical breakdown, food must be broken into smaller molecules as it passes through the digestive system digestion breaks down large food molecules into small molecules so they can pass into our bloodstream we need nutrients from our food to keep our bodies healthy
