Sum of all the reactions that are taking place in a cell is known as

Options

A. catabolism
B. anabolism
C. metabolism
D. redox reaction

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the sum of all the reactions occurring within a cell.

2. **Identifying the Options**: The options provided are:
- A) Catabolism
- B) Anabolism
- C) Metabolism
- D) Redox Reaction

3. **Defining Metabolism**: Metabolism is defined as the total of all biochemical reactions that occur within a living organism. It encompasses both the breakdown of molecules (catabolism) and the synthesis of molecules (anabolism).

4. **Explaining Catabolism and Anabolism**:
- **Catabolism**: This is the process of breaking down larger macromolecules into smaller molecules, which releases energy. Examples include glycolysis and the Krebs cycle.
- **Anabolism**: This involves the synthesis of larger macromolecules from smaller ones, requiring energy input. Examples include fatty acid synthesis and amino acid synthesis.

5. **Conclusion**: Since metabolism includes both catabolic and anabolic reactions, the correct answer to the question is **C) Metabolism**.

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