Exploring Liver and Catalase Functions

The video tutorial demonstrates an experiment to observe the reaction of hydrogen peroxide with liver, focusing on the enzyme catalase. It explores the effects of temperature and pH on enzyme activity. The experiment involves measuring hydrogen peroxide, adding it to liver in test tubes, and observing reactions. The video tests catalase reusability, heat, cold, and pH effects on enzyme activity, noting observations in a data table.

What was the first step in the experiment?

• Measuring hydrogen peroxide

• Adding liver to the test tube

• Labeling the test tubes

• Observing the reaction

What was observed when hydrogen peroxide was added to the liver in test tube number 1?

• Temperature drop

• No reaction

• Formation of bubbles

• Color change

How did the bottom of the test tube feel after the reaction in test tube number 1?

• No change

• Warmer

• Sticky

• Cooler

What was the purpose of adding a fresh piece of liver to test tube number 2?

• To measure the temperature change

• To observe the reaction with used liquid

• To see if the reaction is endothermic

• To test the reusability of catalase

What was the result when fresh hydrogen peroxide was added to the used liver in test tube number 1?

• No reaction

• Formation of bubbles

• Color change

• Temperature drop

What was the effect of heating the liver on enzyme activity?

• Increased bubble formation

• No bubble formation

• Temperature drop

• Color change

What was the observation when chilled hydrogen peroxide was added to chilled liver?

• Temperature drop

• Color change

• Formation of bubbles

• No reaction

What was the result when liver soaked in acidic solution was added to hydrogen peroxide?

• Temperature drop

• No reaction

• Formation of bubbles

• Color change

What was the result when liver soaked in alkaline solution was added to hydrogen peroxide?

• No reaction

• Formation of bubbles

• Color change

• Temperature drop

What was the purpose of using different pH solutions in the experiment?

• To measure the temperature change

• To test the reusability of catalase

• To test the effect of temperature

• To test the effect of pH on enzyme activity