7. Why are enzymes called catalysts? 8. State the function of the rectum.
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Explanation:
The Role of Enzymes in the Digestive System. Chemical digestion could not take place without the help of digestive enzymes. An enzyme is a protein that speeds up chemical reactions in the body. Digestive enzymes speed up chemical reactions that break down large food molecules into small molecules.
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catalysts
it increases Or reduces the rate of reaction...
enzymes also do same thing... for helping digestion.....
rectum it helps in making food soft
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