Read the following statements and select the correct option
Statement 1 : Prothrombin is essential for blood clotting
Statement 2 : Prothrombin is synthesised in the liver in the presence of `Ca^(++)`

Options

A. Both statements 1 and 2 are correct
B. Statement 1 is correct but statement 2 is incorrect
C. Statement 1 is incorrect but statement 2 is correct
D. Both statements 1 and 2 are incorrect

Explanation

To solve the question, we need to analyze both statements regarding prothrombin and determine their correctness.

### Step-by-Step Solution:

1. **Understanding Prothrombin**:
- Prothrombin is a zymogen, which means it is an inactive precursor of an enzyme. Specifically, it is the inactive form of thrombin, which is crucial for the blood clotting process.

2. **Evaluating Statement 1**:
- Statement 1 claims that "Prothrombin is essential for blood clotting."
- This statement is true because prothrombin is converted into thrombin, which is necessary for the conversion of fibrinogen into fibrin, a key step in the formation of blood clots.

3. **Evaluating Statement 2**:
- Statement 2 states that "Prothrombin is synthesized in the liver in the presence of `Ca^(++)`."
- This statement is partially true. Prothrombin is indeed synthesized in the liver, but it is synthesized in the presence of Vitamin K, not calcium ions. Calcium ions are important in the later stages of the clotting cascade but are not involved in the synthesis of prothrombin itself.

4. **Conclusion**:
- Since Statement 1 is correct and Statement 2 is incorrect, the correct option is that only Statement 1 is true.

### Final Answer:
- The correct option is: Statement 1 is true, Statement 2 is false.

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