Give one example of competitive inhibition .

Explanation

**Step-by-Step Solution:**

1. **Understanding Competitive Inhibition**: Competitive inhibition occurs when a substance (inhibitor) competes with the substrate for binding to the active site of an enzyme. This means that both the inhibitor and the substrate are vying for the same binding spot on the enzyme.

2. **Mechanism of Competitive Inhibition**: In competitive inhibition, the inhibitor resembles the substrate in structure, allowing it to bind to the active site of the enzyme. However, since it is not the actual substrate, it does not undergo any reaction to form a product. This prevents the substrate from binding and being converted into the product.

3. **Example of Competitive Inhibition**: A classic example of competitive inhibition is the enzyme succinate dehydrogenase in the Krebs cycle. This enzyme catalyzes the conversion of succinate to fumarate.

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