Hydrogen Peroxide and Catalase

What is the effect of temperature on catalase activity?

• It increases continuously with temperature

• It increases initially with temperature, but then decreases as the temperature becomes too high and denatures the enzyme.

• It decreases as the temperature increases

• It has no effect on catalase activity

Tags

NGSS.HS-PS1-5

Explain enzyme-substrate specificity in relation to catalase.

• Catalase has specificity for hydrogen peroxide as its substrate.

• Catalase has specificity for carbon dioxide as its substrate.

• Catalase has specificity for oxygen as its substrate.

• Catalase has specificity for water as its substrate.

What are the factors that can affect enzyme activity?

• Temperature, pH, substrate concentration, enzyme concentration, inhibitors or activators

• Color of the enzyme

• Amount of water in the environment

• Time of day

Describe the hydrogen peroxide decomposition reaction.

• The breakdown of hydrogen peroxide into carbon dioxide and water

• The breakdown of hydrogen peroxide into water and oxygen gas.

• The formation of hydrogen peroxide from water and oxygen gas

• The conversion of hydrogen peroxide into sodium chloride and hydrogen gas

At what temperature does catalase activity peak?

• 37 degrees Celsius

• 0 degrees Celsius

• 100 degrees Celsius

• 20 degrees Celsius

How does a change in pH affect catalase activity?

• A change in pH has no effect on catalase activity

• A change in pH increases the speed of catalase activity

• A change in pH can affect the shape and structure of the catalase enzyme, leading to a decrease in its activity.

• A change in pH causes catalase to become inactive

Tags

NGSS.HS-LS1-3

What is the role of catalase in the decomposition of hydrogen peroxide?

• Catalase has no effect on the decomposition of hydrogen peroxide

• Catalase inhibits the decomposition of hydrogen peroxide

• Catalase catalyzes the decomposition of hydrogen peroxide into water and oxygen.

• Catalase breaks down hydrogen peroxide into sodium and chloride

How does substrate concentration affect enzyme activity?

• It fluctuates randomly

• It increases initially, then levels off

• It has no effect on enzyme activity

• It decreases continuously

Explain the concept of enzyme inhibition and its impact on catalase activity.

• Enzyme inhibition has no impact on catalase activity

• Enzyme inhibition only affects other enzymes, not catalase

• Enzyme inhibition can reduce the activity of catalase, leading to a slower decomposition of hydrogen peroxide.

• Enzyme inhibition increases the activity of catalase