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Food when ingested is too complex for the body to utilize so it is broken down, but even at a basic protein level the body needs to break it down into single elements that are needed in cells and used in processes throughout the body.

Some proteins may be too large to pass through the wall of the intestine and to be put into the blood stream.

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12y ago
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Q: Why is it necessay to breakdown proteins in the digestive system?
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