Assertion :- If a person is injected by testosterone and epinephrine. Testosterone acts slowly and epinephrine acts quickly.
Reason:- Epinephrine activates enzyme of cytoplasm and testosterone acts on nuclear material to produce enzyme.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false.

Answer

To solve the question regarding the assertion and reason about testosterone and epinephrine, we can follow these steps:

### Step 1: Understand the Assertion
The assertion states that if a person is injected with testosterone and epinephrine, testosterone acts slowly while epinephrine acts quickly.

**Hint:** Consider the nature of the hormones and their mechanisms of action.

### Step 2: Analyze the Reason
The reason provided explains that epinephrine activates enzymes in the cytoplasm quickly, while testosterone acts on nuclear material to produce enzymes, which takes longer.

**Hint:** Think about where each hormone exerts its effects and how they interact with cells.

### Step 3: Evaluate the Mechanism of Action
- **Testosterone** is a steroid hormone that passes through the cell membrane and binds to receptors in the nucleus. This process involves gene expression, which takes time, hence its slow action.
- **Epinephrine**, on the other hand, is a catecholamine that binds to receptors on the cell surface and activates signaling pathways that lead to rapid responses in the cytoplasm.

**Hint:** Recall the difference between steroid hormones and peptide hormones in terms of their action speed.

### Step 4: Determine the Truth of the Statements
Both the assertion and the reason are true:
- The assertion is correct because testosterone indeed acts slowly compared to epinephrine.
- The reason is also correct as it accurately describes the mechanisms of action for both hormones.

**Hint:** Check if the reason logically explains the assertion.

### Step 5: Conclusion
Since both the assertion and reason are true, and the reason correctly explains the assertion, the correct answer is:
1. Both assertion and reason are true, and the reason is the correct explanation of the assertion.

**Final Answer:** Option 1 is the correct choice.