Standard Science Primary 4 Systems

Why do we need to chew our food into smaller pieces?

A To make the food look smaller.
B To taste the food better.
C To prevent the food from getting stuck in the stomach.
D To increase the surface area for digestive juices to work faster.
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Worked Solution

Step 1: Chewing is mechanical digestion. Step 2: Breaking food into smaller pieces increases the surface area. Step 3: This allows digestive juices (enzymes) to break down food chemically more efficiently.

Correct answer: To increase the surface area for digestive juices to work faster.

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