Amylopsin acts upon :

Options

A. Polysaccharide in any medium
B. Polysaccharide in acidic medium
C. Polysaccharide in alkaline medium
D. All of these

Answer

To solve the question "Amylopsin acts upon:", we will follow these steps:

### Step 1: Identify Amylopsin
Amylopsin is a pancreatic enzyme. It is important to note that it is involved in the digestion of carbohydrates.

**Hint:** Remember that amylopsin is a type of enzyme produced by the pancreas.

### Step 2: Determine the Substrate
Amylopsin specifically acts on polysaccharides. These are complex carbohydrates that consist of long chains of sugar molecules.

**Hint:** Think about what types of carbohydrates exist; polysaccharides are the larger, more complex ones.

### Step 3: Consider the Medium
Amylopsin functions optimally in a slightly alkaline environment, which is typical for the conditions in the small intestine where it operates. It does not work in acidic conditions.

**Hint:** Recall the pH levels in different parts of the digestive system; the small intestine is alkaline.

### Step 4: Evaluate the Options
Given the information that amylopsin acts on polysaccharides in an alkaline medium, we can conclude that the correct answer must reflect this.

**Hint:** Look for options that mention polysaccharides and an alkaline medium.

### Final Answer
Amylopsin acts upon polysaccharides in an alkaline medium.

**Correct Option:** C (if it corresponds to polysaccharides in the context of the question).

### Summary of Steps
1. Identify amylopsin as a pancreatic enzyme.
2. Determine that it acts on polysaccharides.
3. Recognize the importance of an alkaline medium for its function.
4. Evaluate the options to find the correct answer.