The use of absorbed food materials by the body cells for growth and repair is called
Correct answer: C. assimilation
- A. ingestion
- B. egestion
- C. assimilation
- D. absorption
Explanation
Assimilation is the last stage of nutrition, in which the absorbed molecules are actually built into cell components or oxidised for energy. Absorption is the earlier step of moving them from the gut into the blood, which is the usual confusion. Egestion is the removal of undigested material as faeces and is not excretion, since that waste never entered the body's cells.
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About Human Digestive System
The human digestive system breaks food into absorbable molecules through mechanical processing, enzyme action and chemical conditions along the alimentary canal. Questions cover the mouth, stomach, small and large intestines, liver, pancreas and associated secretions, including the digestion and absorption of carbohydrates, proteins, lipids, vitamins, minerals and water.
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