In a continuous culture system, the replacement of old medium by new one helps in maintaining which phase of the cell ?

Explanation

To answer the question regarding which phase of the cell is maintained in a continuous culture system through the replacement of old medium with new one, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Continuous Culture Systems**: Continuous culture systems, such as fermenters, are designed to maintain a constant environment for microorganisms. This involves the continuous addition of fresh growth medium and the removal of spent medium.

2. **Phases of Microbial Growth**: Microbial growth typically occurs in several phases:
- **Lag Phase**: The initial phase where cells acclimatize to the environment.
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