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Weekly Health Quiz: Biology, Heart Attacks and Alzheimer's

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This is an older article that may not reflect Dr. Mercola’s current view on this topic. Use our search engine to find Dr. Mercola’s latest position on any health topic.

1 Which of the following is a necessity for all biological processes in your body, catalyzing biochemical reactions that otherwise cannot occur?

  • Vitamin D
  • Antioxidants
  • Protein
  • Enzymes

    Enzymes are necessary for all physiological processes. They catalyze biological functions that otherwise would not occur at physiological temperatures, so they're absolutely vital for optimal health and life. Learn more.

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