A metabolic pathway is a sequence of chemical reactions in which each step is controlled by its own specific enzymes.

Answer

### Step-by-Step Text Solution:

1. **Definition of Metabolic Pathways**:
- A metabolic pathway consists of a series of chemical reactions that occur within a cell. Each reaction in this pathway is facilitated by a specific enzyme.

2. **Types of Metabolic Pathways**:
- There are two primary types of metabolic pathways:
- **Anabolic Pathways**: These involve the synthesis of complex molecules from simpler ones, requiring energy input.
- **Catabolic Pathways**: These involve the breakdown of complex molecules into simpler ones, releasing energy.

3. **Role of Enzymes**:
- Enzymes are biological catalysts that speed up chemical reactions. Each step in a metabolic pathway is controlled by its own specific enzyme, which ensures that the reaction proceeds efficiently and correctly.

4. **Induced Fit Model**:
- The induced fit model explains how enzymes interact with substrates. According to this model:
- The substrate enters the active site of the enzyme.
- An enzyme-substrate complex is formed.
- The enzyme catalyzes the conversion of the substrate into products.
- Finally, the products are released from the enzyme, freeing the active site for another substrate.

5. **Example of a Metabolic Pathway**:
- An example of a metabolic pathway is fermentation in yeast, which requires the enzyme zymase. This illustrates that specific enzymes are necessary for specific reactions within metabolic pathways.

6. **Conclusion**:
- The statement that "a metabolic pathway is a sequence of chemical reactions in which each step is controlled by its own specific enzymes" is true. Each chemical reaction in both anabolic and catabolic pathways requires specific enzymes for catalysis.