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ENZYMES Quick Quiz 1

ENZYMES Quick Quiz 1. Press the button when you’re sure… remember to take your time as you only get one chance!. What 2 substances are made in the break down of the hydrogen peroxide by manganese dioxide?. Water and carbon dioxide Water and carbon dioxide Oxygen and food

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ENZYMES Quick Quiz 1

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  1. ENZYMES Quick Quiz 1 Press the button when you’re sure… remember to take your time as you only get one chance! ENZYMES 1

  2. What 2 substances are made in the break down of the hydrogen peroxide by manganese dioxide? • Water and carbon dioxide • Water and carbon dioxide • Oxygen and food • Oxygen and water ENZYMES 1

  3. Which substance could we easily see being produced in this reaction? • Water • carbon dioxide • Oxygen • detergent ENZYMES 1

  4. What effect does the catalyst have on the break down of hydrogen peroxide? • Slows it down • Speeds it up • No effect • Turns hydrogen peroxide black ENZYMES 1

  5. How could we prove that the gas given off was in fact oxygen gas? •  The gas would blow out a wooden splint • The gas would relight a glowing splint • The gas would blow out a glowing splint • The gas would relight a wooden splint ENZYMES 1

  6. Our livers contain an enzyme called catalase, which breaks down toxic (harmful) hydrogen peroxide into water and oxygen. • TRUE • FALSE ENZYMES 1

  7. Both the enzyme catalase and the chemical manganese dioxide break down hydrogen peroxide. • TRUE • FALSE ENZYMES 1

  8. Only catalase enzyme breaks down hydrogen peroxide. • TRUE • FALSE ENZYMES 1

  9. The enzyme catalase speeds up the break down of hydrogen peroxide which is a harmful substance. • TRUE • FALSE ENZYMES 1

  10. There is no difference between a biological washing powder and a non-biological washing powder in terms of the energy they use.   • TRUE • FALSE ENZYMES 1

  11. Enzymes are biological catalysts which speed up the rate of chemical reactions.  • TRUE • FALSE ENZYMES 1

  12. Enzymes can be extracted from plants and animals and used to clot milk to make cheese. • TRUE • FALSE ENZYMES 1

  13. Non-biological washing powders have enzymes added to them. • TRUE • FALSE ENZYMES 1

  14. Human enzymes work best below a temperature of 30°C. • TRUE • FALSE ENZYMES 1

  15. Enzymes are biological catalysts which slow down the rate of chemical reactions. • TRUE • FALSE ENZYMES 1

  16. Manganese dioxide is an enzyme, as it speeds up the chemical reaction. • TRUE • FALSE ENZYMES 1

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