Mark the right statement among the following.

Options

A. Trypsiogen is an inactive enzyme.
B. Trypsinogen is secreted by intestinal mucosa.
C. Enterokinase is secreted by pancreas.
D. Bile contains trypsin.

Explanation

To solve the question, we need to evaluate each statement provided and determine which one is correct. Here's the step-by-step solution:

### Step 1: Evaluate the First Statement
- **Statement:** Trypsinogen is an inactive enzyme.
- **Analysis:** This statement is true. Trypsinogen is indeed an inactive precursor (zymogen) of the enzyme trypsin, which is involved in protein digestion. It is secreted by the pancreas.

### Step 2: Evaluate the Second Statement
- **Statement:** Trypsinogen is secreted by intestinal mucosa.
- **Analysis:** This statement is false. Trypsinogen is secreted by the pancreas, not the intestinal mucosa.

### Step 3: Evaluate the Third Statement
- **Statement:** Enterokinase is secreted by pancreas.
- **Analysis:** This statement is also false. Enterokinase is an enzyme that is secreted by the intestinal mucosa (specifically from the cells lining the duodenum) and activates trypsinogen to trypsin.

### Step 4: Evaluate the Fourth Statement
- **Statement:** Bile contains trypsin.
- **Analysis:** This statement is false. Bile does not contain trypsin. Bile is primarily composed of bile salts, cholesterol, and bilirubin, and is involved in the emulsification of fats.

### Conclusion
After evaluating all the statements, the only correct statement is:
- **Correct Statement:** Trypsinogen is an inactive enzyme.

### Final Answer
The right answer is: **Trypsinogen is an inactive enzyme.**

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