Enzyme Action
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Questions and Answers

Which term describes the pocket-like structure on the enzyme surface where the substrate can bind?

  • Active site (correct)
  • Inactive site
  • Substrate site
  • Catalytic site

    • What is the effect of a change in pH on enzyme action?

  • It can affect the enzyme's activity (correct)
  • It has no impact on the enzyme's function
  • It increases the enzyme's specificity
  • It decreases the enzyme's affinity for substrates

    • In lab experiments assessing enzyme action, what is used as the substrate when catalase is used as the enzyme?

  • Hydrochloric acid (HCl)
  • Hydrogen peroxide (H2O2) (correct)
  • Sodium hydroxide (NaOH)
  • Sodium chloride (NaCl)

    • What type of reactions are involved in metabolism?

    <p>Both anabolic and catabolic reactions</p> Signup and view all the answers

    What is the function of catalase?

    <p>Break down H2O2 into oxygen and water</p> Signup and view all the answers

    In the enzyme specificity experiment, what is the purpose of filling the tubes with H2O, sucrose, and H2O2?

    <p>To observe the catalase's effect on different substances</p> Signup and view all the answers

    What is the purpose of the temperature & enzyme activity experiment?

    <p>To test the effect of temperature on enzyme activity</p> Signup and view all the answers

    In the enzyme concentration experiment, what is being tested?

    <p>The effect of varying catalase concentration on reaction rate</p> Signup and view all the answers

    What does the substrate concentration experiment primarily investigate?

    <p>The effect of varying H2O2 concentration on reaction rate</p> Signup and view all the answers

    What is being tested in the pH and enzyme activity experiment?

    <p>The impact of different pH levels on enzyme activity</p> Signup and view all the answers

    What happens when catalase uses H2O2?

    <p>It breaks down H2O2 into oxygen and water</p> Signup and view all the answers

    What is the primary function of an enzyme in a biological system?

    <p>To speed up chemical reactions</p> Signup and view all the answers

    What is the effect of an increase in temperature on enzyme activity?

    <p>It increases enzyme activity</p> Signup and view all the answers

    What is the significance of the active site in enzyme action?

    <p>It is where the substrate can bind to the enzyme</p> Signup and view all the answers

    How does a change in pH affect enzyme action?

    <p>It decreases or increases enzyme activity depending on the pH level</p> Signup and view all the answers

    What is the purpose of the enzyme specificity experiment described in the text?

    <p>To determine the effectiveness of catalase in breaking down H2O2 compared to other substances</p> Signup and view all the answers

    In the temperature & enzyme activity experiment, what is the primary purpose of placing the tubes in different temperature conditions before adding H2O2?

    <p>To observe the effect of temperature on catalase activity</p> Signup and view all the answers

    What is being tested in the enzyme concentration experiment described in the text?

    <p>The impact of varying amounts of catalase on enzyme activity</p> Signup and view all the answers

    In the substrate concentration experiment, what is the primary focus?

    <p>Assessing how varying amounts of H2O2 impact catalase activity</p> Signup and view all the answers

    What is one substance that catalase helps to oxidize in the body?

    <p>Formaldehyde</p> Signup and view all the answers

    What is the primary focus of the temperature & enzyme activity experiment?

    <p>To observe the effect of varying temperatures on catalase activity</p> Signup and view all the answers

    In metabolism, which type of reaction involves substrates being joined together to form products?

    <p>Anabolic</p> Signup and view all the answers

    What term describes the pocket-like structure on the enzyme surface where the substrate can bind?

    <p>Active site</p> Signup and view all the answers

    What is the effect of an increase in temperature on enzyme activity?

    <p>Initially increases activity, then denatures the enzyme at high temperatures</p> Signup and view all the answers

    Enzyme specificity experiment involves testing the enzyme's ability to break down different substances

    <p>True</p> Signup and view all the answers

    In the substrate concentration experiment, the tubes are filled with catalase before adding H2O2

    <p>False</p> Signup and view all the answers

    The pH and enzyme activity experiment investigates the effect of different pH levels on catalase activity

    <p>True</p> Signup and view all the answers

    Catalase primarily helps to break down harmful toxins in the body, such as formaldehyde and formic acid

    <p>True</p> Signup and view all the answers

    Enzymes are biological catalysts that slow down the chemical reactions in our body

    <p>False</p> Signup and view all the answers

    Anabolic metabolism involves the breakdown of substrates to form products

    <p>False</p> Signup and view all the answers

    Enzyme activity is not affected by changes in concentration of substrate and enzyme

    <p>False</p> Signup and view all the answers

    Catalase is used as the enzyme and HCL is used as the substrate in the lab experiments assessing enzyme action

    <p>False</p> Signup and view all the answers

    Enzyme action is not affected by changes in pH

    <p>False</p> Signup and view all the answers

    What is one substance that catalase helps to oxidize in the body?

    <p>H2O2</p> Signup and view all the answers

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