Plant chemical defences against pathogens

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1. What do alkaloids do?

  • They bind to salivary proteins and digestive enzymes
  • They affect molecules in the plasma membrane
  • They inhibit or activate enzyme action
  • Contain essential oils
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2. Which of these is NOT an example of an alkaloid?

  • Nictotine
  • Caffeine
  • Tobacco
  • Cocaine

3. What are defensive proteins?

  • Small cysteine rich proteins
  • Nitrogen-containing compounds
  • Tannins found in bark
  • A range of essential oils

4. What is the chemical in plants that creates scent?

  • hydrolytic enzymes
  • Phenols
  • Terpenoids
  • Alkaloids

5. What property DON'T phenols have?

  • They bind to salivary proteins and digestive enzymes
  • They contain tannins found in bark
  • They're nitrogen-containing compounds
  • They're anitbacterial and antifungal

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