Here's why:
* Enzymes are proteins: Enzymes are biological catalysts made of proteins.
* Proteins have specific 3D shapes: The specific shape of an enzyme is crucial for its function. This shape is maintained by weak bonds, like hydrogen bonds and ionic bonds.
* Extreme pH disrupts these bonds: When the pH is too acidic or basic, it disrupts the balance of these weak bonds, causing the enzyme to unfold and lose its 3D structure.
* Denaturation means loss of function: This unfolding process is called denaturation, and it renders the enzyme inactive, as it can no longer bind to its substrate and catalyze the reaction.
In summary: Extreme pH levels can denature enzymes by disrupting the weak bonds that hold their 3D structure together, leading to a loss of their catalytic activity.