Here's why sulphuric acid is not suitable:
* Denaturation: Enzymes are proteins with specific three-dimensional structures essential for their function. Strong acids like sulphuric acid disrupt these structures by breaking bonds, causing the enzyme to lose its activity.
* pH Changes: Enzymes have optimal pH ranges for their activity. Sulphuric acid's high acidity would drastically alter the pH of the reaction environment, moving it far from the enzyme's optimal range and inhibiting its function.
* Interference with Reactions: Sulphuric acid can interfere with the chemical reactions catalyzed by enzymes, leading to inaccurate results.
Instead of sulphuric acid, researchers use different reagents depending on the specific enzyme and experiment:
* Buffers: Buffers are solutions that resist pH changes, maintaining the reaction environment close to the enzyme's optimal pH. Common buffers include phosphate buffer, Tris buffer, and acetate buffer.
* Substrate: The substance upon which the enzyme acts is called the substrate. The substrate is often used at a specific concentration to measure the enzyme's activity.
* Co-factors and Co-enzymes: Some enzymes require additional molecules, such as co-factors or co-enzymes, for their activity. These are added as needed.
* Indicators: Indicators are substances that change color depending on the presence or absence of a specific product of the enzyme-catalyzed reaction. They help visualize the reaction progress.
In summary, sulphuric acid is not used in experiments measuring enzyme activity due to its denaturing and pH-altering properties.
