Human cells in culture divide approximately for every

Options

A. 90 minutes
B. 19 minutes
C. 24 hours
D. One hour

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Division**: Human cells undergo a process called cell division, which is crucial for growth and development. This process starts with a single cell, which grows and then divides into two daughter cells.

2. **Cell Cycle Duration**: The entire process of the cell cycle in human cells typically lasts about 24 hours. This cycle includes several phases, primarily interphase (where the cell grows and DNA is replicated) and the mitotic phase (M phase, where the actual division occurs).

3. **Phases of the Cell Cycle**:
- **Interphase**: This phase takes the majority of the time in the cell cycle, approximately 23 hours, where the cell prepares for division.
- **M Phase**: This phase is relatively short, lasting about 1 hour, where the cell divides.

4. **Conclusion**: Since the entire cell cycle lasts about 24 hours, we can conclude that human cells in culture divide approximately every 24 hours.

5. **Selecting the Correct Option**: Among the given options (90 minutes, 19 minutes, 24 hours, 1 hour), the correct answer is 24 hours.

**Final Answer**: Human cells in culture divide approximately every **24 hours**.

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