Bring out the matching pair

Options

A. Renin - Protein
B. Trypsin - Starch
C. Invertase = Sucrose
D. Amylase = Lactose,

Answer

To solve the question of matching enzymes with their respective substrates, we will analyze each enzyme and its corresponding substrate step by step.

### Step-by-Step Solution:

1. **Identify the first pair: Renin and Protein**
- Renin is an enzyme secreted by the chief cells in the stomach. It specifically acts on milk protein, particularly casein, to coagulate milk. However, the term "protein" is too general since renin specifically targets casein in milk. Therefore, this pairing is incorrect.

2. **Identify the second pair: Trypsin and Starch**
- Trypsin is an enzyme produced by the pancreas that primarily digests proteins. Starch, on the other hand, is a polysaccharide. Since trypsin does not act on starch, this pairing is also incorrect.

3. **Identify the third pair: Invertase and Sucrose**
- Invertase is an enzyme found in intestinal juice that specifically acts on sucrose, breaking it down into glucose and fructose. This pairing is correct as invertase directly works on sucrose.

4. **Identify the fourth pair: Amylase and Lactose**
- Amylase is an enzyme that digests starch and is secreted by the salivary glands and pancreas. Lactose is a disaccharide sugar, and amylase does not act on lactose. Therefore, this pairing is incorrect.

### Conclusion:
The only correct matching pair is **Invertase and Sucrose**. Thus, the correct answer is option 3.

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