Optimum temperature is the temperature at which organism's life activities

Options

A. are at minimum level
B. begin
C. are at maximum level
D. stop

Answer

**Step-by-Step Solution:**

1. **Understanding Optimum Temperature**:
- Optimum temperature refers to the specific temperature range at which an organism's biological processes function most efficiently.

2. **Life Activities at Optimum Temperature**:
- At this temperature, the life activities of the organism, such as growth, reproduction, and metabolism, occur at their best or maximum levels.

3. **Role of Enzymes**:
- Enzymes, which are crucial for biochemical reactions, operate optimally at specific temperatures. At the optimum temperature, enzyme activity is maximized, leading to efficient metabolic processes.

4. **Consequences of Deviating from Optimum Temperature**:
- If the temperature is too low, the life activities may slow down, and if it is too high, it may lead to denaturation of enzymes, causing life activities to stop or function poorly.

5. **Conclusion**:
- Therefore, the correct answer to the question is that at optimum temperature, an organism's life activities are at maximum level.

**Final Answer**: Optimum temperature is the temperature at which an organism's life activities are at maximum level.

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