HISTOLOGY
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In physical digestion:
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a chemical reaction takes place
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no new substances are produced
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an enzyme converts one chemical into another
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food is not broken into smaller pieces but just mixed
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Explanation:
Detailed explanation-1: -Physical changes do not produce a new substance. Chemical changes result in the production of a new substance and cannot be reversed.
Detailed explanation-2: -Therefore, a change in which no new substance is formed is known as physical change.
Detailed explanation-3: -A change in which a substance undergoes a change in its physical properties is called a physical change. A physical change is generally reversible. In such a change no new substance is formed.
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