Which process in the mouth is mechanical digestion rather than chemical digestion?
Correct answer: A. Breaking food into smaller pieces by chewing
- A. Breaking food into smaller pieces by chewing
- B. Changing starch into maltose by amylase
- C. Starting protein digestion with gastric enzymes
- D. Emulsifying fat with bile salts
Explanation
Chewing physically breaks food into smaller pieces and mixes it with saliva. Amylase action, protein enzyme activity, and bile emulsification are chemical processes that change or assist the digestion of nutrients.
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About Digestive System
The digestive system covers the structure and functions of the alimentary canal from mouth to anus, along with the liver, gallbladder and pancreas. It explains mechanical and chemical digestion, the action of major enzymes, absorption through intestinal villi, and how digestion differs from absorption and assimilation.
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