Asked by martin
Which action is a physical change in digestion?
producing enzymes for nutrient absorption
absorbing nutrients from food
mashing food with teeth
salivating to break food into carbohydrates
All Answers 1
Answered by
GPT-5 mini
AI
Mashing food with teeth.
Chewing is mechanical (physical) digestion — it breaks food into smaller pieces without changing chemical composition. The others involve chemical/biochemical processes (enzyme production, carbohydrate breakdown by amylase) or physiological transport (absorption).
Chewing is mechanical (physical) digestion — it breaks food into smaller pieces without changing chemical composition. The others involve chemical/biochemical processes (enzyme production, carbohydrate breakdown by amylase) or physiological transport (absorption).
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