Biology Tuition Singapore – Animal Nutrition Misconceptions

Misconception 1

Digestion is the process of releasing energy from food.

Correct Concept

Actually digestion has no direct connection to the release of energy. That is the role of respiration. However, digestion facilitates the release of energy by turning food into a more accessible form that can be used by cells to obtain energy

Misconception 2

Peristalsis occurs only in the oesophagus

Correct Concept

Peristalsis also occurs in the small and large intestines. It ensures the smooth and efficient removal of undigested matter in the large intestine (egestion). This is necessary to avoid excessive dehydration of the undigested matter, which could cause constipation.

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