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25. Explain digestion of food in stomach. |
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Answer» Digestionis the breakdown of large insolublefoodmolecules into small water-soluble food molecules so that they can be absorbed into the wateryblood plasma. In certain organisms, these smaller substances are absorbed through thesmall intestineinto theblood stream. Digestion is a form ofcatabolismthat is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The termmechanical digestionrefers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed bydigestive enzymes. Inchemical digestion,enzymesbreak down food into the small molecules the body can use. |
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