Digestion of food involves breaking down of good componets into smaller molecules by enzymes. These enzymes are active only at certain hydrogen ion concentration. As a result, certain food combinations can facilitate or retard the process of digestion. Of the following combinations, one that can result in very efficient digestion is

Options

A. meal with high proteins and cacid fruits
B. meal with high starch and high proteins
C. meals with high starch and acid fruits
D. meal with high fat and high proteins.

Explanation

To determine which food combination results in very efficient digestion, we need to analyze how different food components interact with digestive enzymes, particularly focusing on their pH levels.

### Step-by-Step Solution

1. **Understanding Digestion**:
- Digestion is the process of breaking down food into smaller molecules that can be absorbed by the body. This process is facilitated by enzymes.

2. **Role of Enzymes**:
- Enzymes are biological catalysts that speed up chemical reactions, including the breakdown of food. They are specific to certain substrates and have optimal pH levels at which they function best.

3. **pH Dependence**:
- Different enzymes work optimally at different pH levels. For example, pepsin, an enzyme that digests proteins, works best in acidic conditions (low pH).

4. **Analyzing Food Combinations**:
- The question presents various food combinations. We need to identify which combination will create an environment conducive to efficient digestion.

5. **Evaluating the Options**:
- **Option 1**: Meal with high protein and acidic fruit.
- High protein foods require pepsin for digestion, which is active in acidic conditions. The acidic fruit can provide the necessary low pH environment.
- **Other Options**: (not specified in the transcript but typically would include combinations like high protein with alkaline foods, high carbohydrates with acidic fruits, etc.)
- These combinations may not provide the optimal pH for enzyme activity.

6. **Conclusion**:
- The combination of a meal with high protein and acidic fruit is the most effective for digestion because it creates an acidic environment that enhances the activity of pepsin, leading to efficient protein digestion.

### Final Answer:
The combination that results in very efficient digestion is **a meal with high protein and acidic fruit**.

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