Catalase Reaction and Measurement Techniques

The video tutorial explores the enzyme catalase, which breaks down toxic hydrogen peroxide into water and oxygen. The experiment uses catalase from potatoes, with a setup involving minced potato, buffer solution, and hydrogen peroxide. The procedure involves mixing these components and measuring the oxygen gas produced, which is captured in a measuring cylinder. The tutorial demonstrates how to conduct the experiment and measure the results effectively.

What is the primary function of the enzyme catalase?

• To synthesize proteins

• To transport oxygen in the blood

• To break down hydrogen peroxide

• To convert glucose into energy

In the experiment, which type of cells are used to source catalase?

• Liver cells

• Yeast cells

• Potato cells

• Bacterial cells

What is the pH of the buffer solution used in the experiment?

• pH 6

• pH 8

• pH 7

• pH 5

What concentration of hydrogen peroxide is used in the experiment?

• 20%

• 15%

• 10%

• 5%

What is the role of the syringe in the experiment?

• To measure the buffer solution

• To draw up the potato extract

• To capture oxygen gas

• To inject hydrogen peroxide

How is the oxygen gas produced in the reaction captured?

• In a plastic bag

• In a balloon

• In a test tube

• In a measuring cylinder

What is the purpose of the measuring cylinder in the experiment?

• To measure the volume of potato

• To measure the volume of buffer solution

• To measure the volume of oxygen gas

• To measure the volume of hydrogen peroxide

Why is it important to wait before inserting the tube into the measuring cylinder?

• To prevent air from entering the cylinder

• To allow the reaction to start

• To let the potato settle

• To ensure the buffer solution is mixed

What is observed in the measuring cylinder as the reaction proceeds?

• Decrease in liquid level

• Formation of bubbles

• Change in color

• Increase in temperature

What does the meniscus in the measuring cylinder indicate?

• The amount of hydrogen peroxide

• The amount of buffer solution

• The amount of oxygen produced

• The amount of potato extract