A child took sugarcane and sucked its juice, regarding this which of the following match is correct?

Options

A. (a) `{:("Substrate","Enzyme","Site of secretion of enzyme","Products formed"),("Proteins","Pepsin","Duodenum","Polypeptides"):}`
B. (b) `{:("Substrate","Enzyme","Site of secretion of enzyme","Products formed"),("Starch","Amylase","Salivary glands","Glucose"):}`
C. (c) `{:("Substrate","Enzyme","Site of secretion of enzyme","Products formed"),("Lipids","Lipase","Pancreas","Fat globules"):}`
D. (d) `{:("Substrate","Enzyme","Site of secretion of enzyme","Products formed"),("Sucrose","Invertase","Duodenum","Glucose+fructose"):}`

Explanation

To solve the question regarding the digestion of sugarcane juice by a child, we need to identify the correct match of substrate, enzyme, site of secretion of the enzyme, and product formed. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the main component of sugarcane juice
- **Sugarcane juice** is primarily composed of **sucrose**, which is a disaccharide sugar.

### Step 2: Understand the digestion process
- When a child sucks the juice from sugarcane, the **sucrose** enters the digestive system.

### Step 3: Identify the enzyme involved in digestion
- The enzyme that digests sucrose is called **invertase** (also known as sucrase). This enzyme hydrolyzes sucrose into its monosaccharide components.

### Step 4: Determine the site of enzyme secretion
- The enzyme invertase is secreted in the **duodenum**, which is the first part of the small intestine.

### Step 5: Identify the products formed
- The hydrolysis of sucrose by invertase results in the formation of two monosaccharides: **glucose** and **fructose**.

### Step 6: Match the components
- Now we can summarize the findings:
- **Substrate**: Sucrose
- **Enzyme**: Invertase
- **Site of secretion**: Duodenum
- **Products formed**: Glucose and Fructose

### Step 7: Select the correct option
- Based on the above information, we can identify that the correct match corresponds to **option D**, which lists:
- Substrate: Sucrose
- Enzyme: Invertase
- Site: Duodenum
- Products: Glucose and Fructose

### Final Answer
- Hence, the correct answer is **option D**.

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