State whether the following statement is true or false.
The so-called resting nucleus is not really resting.
A. True
B. False

Answer

To determine whether the statement "The so-called resting nucleus is not really resting" is true or false, we can analyze the concept of the resting nucleus in the context of the cell cycle.

### Step-by-Step Solution:

1. **Understanding the Term "Resting Nucleus":**
- The term "resting nucleus" typically refers to the nucleus during the interphase of the cell cycle. Interphase is the phase where the cell is not actively dividing.

2. **Clarifying Interphase:**
- Interphase is divided into three stages: G1 (Gap 1), S (Synthesis), and G2 (Gap 2). During this time, the cell is preparing for division, and significant metabolic activity occurs.

3. **DNA Replication:**
- During the S phase of interphase, DNA replication occurs. This means that the genetic material is duplicated, which is a crucial process for cell division.

4. **Activity in the Nucleus:**
- Even though the cell is not dividing during interphase, the nucleus is actively involved in processes such as DNA replication, transcription, and other metabolic activities.

5. **Conclusion:**
- Since the nucleus is actively engaged in important processes during interphase, it is incorrect to label it as "resting." Therefore, the statement "The so-called resting nucleus is not really resting" is true.

### Final Answer:
A. True

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