Lab – Factors that Affect Enzymes

The video tutorial explores how temperature and pH affect enzyme activity. It includes two experiments: one using pineapple to observe temperature effects on enzymes, and another using liver to study pH effects. The tutorial provides detailed procedures, materials needed, and instructions for conducting these experiments, allowing viewers to understand the impact of environmental factors on enzyme function.

What is the main focus of the experiment involving pineapple?

• To test the sweetness of different pineapples

• To observe how enzymes break down proteins

• To compare the color of fresh and canned pineapple

• To measure the acidity of pineapple juice

Which type of pineapple is used as a control in the temperature experiment?

• No pineapple

• Canned pineapple

• Frozen pineapple

• Fresh pineapple

What is the purpose of using a mortar and pestle in the temperature experiment?

• To cool the pineapple

• To heat the pineapple

• To increase the surface area of the pineapple

• To measure the mass of the pineapple

Which material is NOT required for the pH experiment?

• pH test strips

• Hydrogen peroxide

• 250 milliliter beaker

• Mortar and pestle

What is the role of sodium bicarbonate in the pH experiment?

• To act as a control

• To neutralize the liver

• To create a basic solution

• To increase acidity

How many drops of vinegar are added to test tube one in the pH experiment?

• 5 drops

• 4 drops

• 2 drops

• 3 drops

What is the final step in the pH experiment?

• Heating the test tubes

• Adding liver to the test tubes

• Measuring the pH of the solutions

• Mixing the solutions with a glass rod