Which of the following enzymes is related with hormonal activity ?

Options

A. Arginase
B. Adenylcyclase
C. Cholinesterase
D. All of these

Answer

To determine which enzyme is related to hormonal activity, we can analyze each option provided:

1. **Arginase (Option A)**:
- Arginase is an enzyme involved in the metabolism of arginine, which is an amino acid. It catalyzes the conversion of arginine into urea and ornithine. However, it does not play a direct role in hormonal activity. Therefore, this option is not correct.

2. **Adenyl Cyclase (Option B)**:
- Adenyl cyclase is an enzyme that converts ATP (adenosine triphosphate) into cAMP (cyclic adenosine monophosphate). cAMP acts as a second messenger in various hormonal signaling pathways. It is crucial for the action of several hormones, including adrenaline (epinephrine), glucagon, and luteinizing hormone (LH). This means that adenyl cyclase is directly related to hormonal activity. Thus, this option is correct.

3. **Choline Esterase (Option C)**:
- Choline esterase is an enzyme that hydrolyzes acetylcholine into acetate and choline. It is primarily involved in the metabolism of neurotransmitters rather than hormones. Therefore, this option is also not correct.

4. **All of These (Option D)**:
- Since only adenyl cyclase is related to hormonal activity, this option is incorrect as well.

Based on the analysis above, the enzyme that is related to hormonal activity is **Adenyl Cyclase (Option B)**.

**Final Answer**: Option B, Adenyl Cyclase.

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