Vitamin E Sources and Functions
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Questions and Answers

What is the primary function of Vitamin E?

  • Acting as an anti-hemorrhage factor
  • Regulating selenium metabolism
  • Aiding in the biosynthesis of coenzymes
  • Protecting cell membranes from oxidative damage (correct)

    • What is the effect of Vitamin E deficiency in female rats?

  • Muscular dystrophy
  • Sterility in males
  • Degeneration of the germinal epithelium
  • Intrauterine death of the fetus (correct)

    • What is the chemical structure of Vitamin K?

  • Tocopherolactone
  • Naphthoquinone (correct)
  • 2-methyl-3-difarnesyl-1, 4-naphthoquinone
  • 2-methyl-3-phytyl-1, 4-naphthoquinone

    • Which of the following is NOT a rich source of Vitamin E?

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

    What is the effect of Vitamin E deficiency on skeletal muscles?

    <p>All of the above</p> Signup and view all the answers

    What is the name of the vitamin commonly known as the anti-hemorrhage factor?

    <p>Vitamin K</p> Signup and view all the answers

    Which sterol is converted into vitamin D2 through irradiation?

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

    Which type of vitamin D is formed by irradiating the animal sterol 7-dehydrocholesterol?

    <p>Vitamin D3</p> Signup and view all the answers

    Which disease is known as the 'antirachitic vitamin' and is associated with bow-legs and enlarged joints in children?

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

    Which naturally occurring tocopherol is the most active form of vitamin E?

    <p>α tocopherol</p> Signup and view all the answers

    What is the sole difference between α, β, γ, and δ tocopherols, which are naturally occurring forms of vitamin E?

    <p>Their number and position of methyl groups in the first ring of tocol nucleus</p> Signup and view all the answers

    What is the process by which vitamin D is synthesized in the skin?

    <p>By solar irradiation of 7-dehydrocholesterol</p> Signup and view all the answers

    What is the chemical structure of Vitamin A?

    <p>A β-ionone ring attached to a hydrocarbon side chain ending in an alcohol group</p> Signup and view all the answers

    What is the name of the aldehyde form of Vitamin A?

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

    What is the source of vitamin A2?

    <p>Fresh water fish liver</p> Signup and view all the answers

    What is the function of retinol in the body?

    <p>Supporting growth and reproduction</p> Signup and view all the answers

    What is the name of the pigments from which Vitamin A is derived?

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

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