During exponential phase of geometrical growth

Options

A. Cell elongate but do not divide
B. Cells divide but do not elongate
C. Both the progeny cells of mitotic division retain the ability of cell division
D. Cell degenerate due to deficiency of nutrients

Answer

**Step-by-Step Solution:**

1. **Understanding Exponential Growth Phase**: The exponential phase of geometric growth is characterized by a rapid increase in the number of cells. During this phase, cells are actively dividing and growing.

2. **Cell Division Mechanism**: In this phase, cells divide regularly through a process known as binary fission. This means that one cell divides into two, and this process continues, leading to exponential growth.

3. **Balanced Growth**: The exponential phase is a pattern of balanced growth, where the growth rate is constant. This indicates that the cells are not only dividing but doing so at a consistent rate.

4. **Factors Influencing Growth**: The rate of cell division during this phase depends on various factors, including the composition of the growth medium and the conditions under which the cells are incubated. These factors can affect how quickly and efficiently the cells can divide.

5. **Evaluating the Options**:
- **Option A**: "Cells elongate but do not divide" - This is incorrect because cells are dividing during the exponential phase.
- **Option B**: "Cells divide but do not elongate" - This is also incorrect as elongation is part of the growth process.
- **Option C**: "Both progeny cells of mitotic division retain the ability of cell division" - This is correct because after division, both cells can continue to divide.
- **Option D**: "Cells degenerate due to efficiency of a protein" - This is incorrect as degeneration is not a characteristic of the exponential phase.

6. **Conclusion**: Based on the analysis, the correct answer is **Option C**: "Both progeny cells of mitotic division retain the ability of cell division."

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