Enzymes

  • Globular proteins
  • biological catalysts whcih speed up reactions
  • have an active site, where substrates attach
  • form a enzyme-substrate complex
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  • Created by: refinne
  • Created on: 15-10-13 10:36

1. What is the effect of non-competitive inhibitors on enzymes?

  • binds to the enzyme permanently, irreversible
  • binds to the enzyme temporarily, reversible
  • speeds up the reaction
  • no effect
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Other questions in this quiz

2. What is the active site?

  • a shape on the enzyme that fits a range of substrates
  • region on the enzyme the substrate binds to
  • something all proteins have
  • region on the substrate the enzyme binds to

3. What is the effect of competitive inhibitors on enzymes?

  • speeds up the reaction
  • no effect
  • binds to the active site temporarily and lowers reaction rate
  • binds to the active site permanently

4. What do enzymes do?

  • cause products to change back into substrates
  • reduce activation energy
  • increase the amount of products made
  • decrease the amount of products made

5. What is the effect of pH on enzyme activity?

  • enzyme works best at very high pHs out of its range
  • enzyme works best in its optimum pH range
  • enzyme works best at very low pHs out of its range
  • no effect

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