HISTOLOGY
INTEGUMENTARY SYSTEM SKIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Physical Change
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Chemical Change
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Mechanical Change
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Myth
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Detailed explanation-1: -Food is chemically digested by enzymes. Once food has been broken down, the nutrients are sent into the bloodstream. Food undergoes many chemical changes before being absorbed by the body. Hence, digestion of food is a chemical change as the complex substances that we eat is changed into simpler substances.
Detailed explanation-2: -Digestion of food is a chemical change because the large macromolecules are broken down into simpler molecules by the enzymes present in the stomach and the intestines. It is a chemical change because it involves various chemical reactions.
Detailed explanation-3: -Digestion is the mechanical and chemical breakdown of food into smaller components. Once the food is digested we cannot convert it to its raw form. Hence digestion of food is a chemical and irreversible change.