Naomi's quiz

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1. what is a catayst?

  • a substance that stops a reaction
  • a substance that increases the speed of a reaction
  • a substance that decreases the speed of a reaction
  • a substance that causes a reaction
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Other questions in this quiz

2. what is the optimum temperature for the most important human enzyme?

  • 40
  • 55
  • 37
  • 45

3. what is an enyme?

  • a lipid
  • a carbohydrate
  • biological catalysts produced by living things
  • man made catalyst

4. what happens to a substrate molecule in a reaction?

  • it changes
  • it stays the same
  • it disappears
  • it multiplies

5. what happens when the temperature goes above the optimum temperaure?

  • it works better
  • it denatures
  • the rate is slower
  • the rate is faster


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