Because they are catalyst and are regenerated / recovered.
Enzymes lower the activation energy of a reaction, acting as a catalyst and speed up the reaction. Plus they never get used up, only over and over again.
it uses water over and over again
alliteration.
enzymes
One reason is that catalyzed reactions, such as amylase breakdown of starch, are repeated over and over again and making enzymes fir every act of predigestion in the mouth would be very expensive in bodily resources.
In humans, the pancreas stores the digestive enzymes. These digestive enzymes turn the food that we consume into energy that the body uses.
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Prophet's Song, composed by Brian May, on Night at the Opera.
Bacterias use restriction enzymes as a form of defense mechanism. We as people use these restriction enzymes in bacterias to aid us in genetic engineering.
they are used in making babay foods and slimming aids.
The main function of the duodenum is to break down the food when it enters the small intestine. It uses enzymes to assist with the breakdown of the food.
enzymes are used to cure some cancers and are in some drugs like worming tablets. The body also has enzymes in places like the digestive system. Enzymes are very useful =]