(i)______ enzyme is secreted in the buccal cavity that helps in the hydrolysis of starch into (ii)________ at pH 6.8. The information in which alternative completes the given statement ?

Options

A. i-Maltase, ii-maltose
B. i-Maltase, ii-lactose
C. i-Amylase, ii-maltose
D. i-Amylase, ii-lactose

Answer

To solve the question, we need to identify the enzyme secreted in the buccal cavity and the product of starch hydrolysis at a specific pH.

### Step-by-Step Solution:

1. **Identify the Enzyme:**
- The enzyme secreted in the buccal cavity is **salivary amylase**. This enzyme is produced by the salivary glands and is responsible for the initial digestion of starch.

2. **Understand the Function of the Enzyme:**
- Salivary amylase catalyzes the hydrolysis of starch, breaking it down into simpler sugars.

3. **Determine the Product of Hydrolysis:**
- The primary product of starch hydrolysis by salivary amylase is **maltose**, which is a disaccharide composed of two glucose units.

4. **Consider the pH Level:**
- The question specifies that this reaction occurs at a pH of 6.8, which is optimal for the activity of salivary amylase.

### Final Statement:
The completed statement would be:
(i) **Salivary amylase** enzyme is secreted in the buccal cavity that helps in the hydrolysis of starch into (ii) **maltose** at pH 6.8.

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