NURSING EXAM QUESTIONS
NUTRITION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the purpose of chemical digestion?
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to absorb minerals such as calcium and iron
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to pass food out as faeces
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to break down large molecules of nutrients into smaller molecules
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to secrete enzymes
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Explanation:
Detailed explanation-1: -The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.
Detailed explanation-2: -Large food molecules (for example, proteins, lipids, nucleic acids, and starches) must be broken down into subunits that are small enough to be absorbed by the lining of the alimentary canal. This is accomplished by enzymes through hydrolysis.
Detailed explanation-3: -As food travels from your mouth into your digestive system, it’s broken down by digestive enzymes that turn it into smaller nutrients that your body can easily absorb. This breakdown is known as chemical digestion.
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