Mark the right statement among the following.

Options

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

Answer

To solve the question, we need to analyze each of the given statements about trypsinogen and related enzymes. Here’s a step-by-step breakdown:

### Step 1: Understand the Role of Trypsinogen
- Trypsinogen is an inactive enzyme (a zymogen) produced by the pancreas. It is converted to its active form, trypsin, in the small intestine.

**Hint:** Remember that inactive enzymes are often referred to as zymogens.

### Step 2: Identify the Source of Trypsinogen
- The statement says "Trypsinogen is secreted by the intestinal mucosa." This is incorrect. Trypsinogen is secreted by the pancreas, not the intestinal mucosa.

**Hint:** Recall the organs involved in digestion and where specific enzymes are produced.

### Step 3: Examine the Activation of Trypsinogen
- The activation of trypsinogen to trypsin is facilitated by an enzyme called enterokinase (or enteropeptidase), which is secreted by the intestinal mucosa.

**Hint:** Focus on how inactive enzymes are activated and the role of other enzymes in this process.

### Step 4: Evaluate the Statement about Bile
- The statement "Bile contains trypsin" is incorrect. Bile is produced by the liver and contains bile salts, pigments, and cholesterol but does not contain digestive enzymes like trypsin.

**Hint:** Differentiate between the functions of bile and pancreatic juices.

### Step 5: Summarize the Findings
- From the analysis:
1. "Trypsinogen is an inactive enzyme." - Correct
2. "Trypsinogen is secreted by the intestinal mucosa." - Incorrect
3. "Trypsinogen comes from pancreas gland." - Correct, but not the statement we are evaluating.
4. "Enterokinase comes from intestinal mucosa." - Correct, but not the statement we are evaluating.
5. "Bile contains trypsin." - Incorrect

### Conclusion
The only correct statement among the options provided is: **"Trypsinogen is an inactive enzyme."**

### Final Answer
The correct statement is: **"Trypsinogen is an inactive enzyme."**

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