Steady state is represented by

Options

A. Getting raw materials
B. Intake of food and energy
C. Intake of materical and energy, elimination of wastes and dissipation of energy
D. Removal of waste products and intake of raw materials

Answer

### Step-by-Step Solution:

1. **Understanding Steady State**:
- The term "steady state" refers to a condition of equilibrium in biological systems. In this state, the internal environment of a cell or organism remains stable despite changes in the external environment.

2. **Metabolic Processes**:
- Living cells are constantly engaged in metabolic activities. Metabolism involves the intake of materials (nutrients), conversion of these materials into usable forms, and the elimination of waste products.

3. **Exchange of Materials**:
- For a cell to maintain a steady state, there must be a continuous exchange of materials with the environment. This includes the intake of raw materials and energy, as well as the elimination of waste.

4. **Analyzing the Options**:
- **Option 1: Getting raw material** - This option is incomplete as it does not mention the processes that follow the intake of raw materials.
- **Option 2: Intake of food and energy** - While this is part of the process, it does not encompass the entire steady state concept, which includes waste elimination and energy dissipation.
- **Option 3: Intake of material and energy, elimination of waste and dissipation of energy** - This option covers all aspects of maintaining a steady state, including intake, processing, and waste management.
- **Option 4: Removal of waste products and intake of raw material** - Similar to option 1, this is incomplete as it does not mention energy dissipation.

5. **Conclusion**:
- Based on the analysis, **Option 3** is the most comprehensive and correct representation of the steady state in biological systems.

### Final Answer:
**Option 3: Intake of material and energy, elimination of waste and dissipation of energy.**

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