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 (B)</p> Signup and view all the answers

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

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

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

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

Which sterol is converted into vitamin D2 through irradiation?

<p>Ergosterol (D)</p> Signup and view all the answers

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

<p>Vitamin D3 (A)</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 (B)</p> Signup and view all the answers

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

<p>α tocopherol (D)</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 (A)</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 (B)</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 (C)</p> Signup and view all the answers

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

<p>Retinal (D)</p> Signup and view all the answers

What is the source of vitamin A2?

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

What is the function of retinol in the body?

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

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

<p>Carotenoids (A)</p> Signup and view all the answers

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