Chewing offood is regarded good for digestion because-

Options

A. Enzymes only act on grinded food
B. It increases the time and surface area of exposure to enzymes
C. Enzymes are only activated during chewing
D. Chewing mixes food well with enzymes

Answer

**Step-by-Step Solution:**

1. **Understanding the Process of Digestion:**
- Digestion begins in the mouth where food is mechanically broken down by chewing. This process is known as mastication.

2. **Role of Chewing:**
- Chewing breaks down large food particles into smaller pieces. This mechanical breakdown increases the surface area of the food.

3. **Importance of Surface Area:**
- A larger surface area allows digestive enzymes to act more efficiently on the food particles. Enzymes need to interact with food to break it down into simpler molecules.

4. **Time Factor:**
- Chewing also increases the time food spends in contact with saliva, which contains digestive enzymes. This prolonged interaction enhances the breakdown of food.

5. **Conclusion:**
- Therefore, the primary reason why chewing is regarded as good for digestion is that it increases both the time and surface area of exposure to enzymes, which facilitates more effective digestion.

**Final Answer:**
Chewing of food is regarded good for digestion because it increases the time and surface area of exposure to enzymes.

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