Vitamin D Synthesis and Activation
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Questions and Answers

Which form of Vitamin D is biologically inert and needs to undergo hydroxylations to become active?

  • Vitamin D3
  • Vitamin D obtained from food (correct)
  • Vitamin D obtained from sun exposure
  • Vitamin D obtained from supplements

    • What is the biologically active form of Vitamin D3 known as?

  • Vitamin D receptor
  • Calcitriol (correct)
  • Calcidiol
  • Vitamin D3

    • Which form of Vitamin D is usually measured in the serum?

  • Vitamin D receptor
  • Calcitriol
  • Vitamin D3
  • Calcidiol (correct)

    • What is the role of 1,25(OH)2D3 in the body?

    <p>Regulates calcium homeostasis, cellular differentiation, and immune function</p> Signup and view all the answers

    What triggers the activation of downstream vitamin D-responsive genes?

    <p>Calcitriol</p> Signup and view all the answers

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