Vitamins: Essential Characteristics and Sources
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Questions and Answers

Which cells in the retina are responsible for vision in dim light?

  • Cone cells
  • Mucosa cells
  • Cornea cells
  • Rod cells (correct)
  • In which type of light are cone cells responsible for vision?

  • Natural light
  • Nocturnal light
  • Dim light
  • Bright and colored light (correct)
  • Apart from vision, where else is retinoic acid (Vitamin A) needed?

  • Muscle regeneration
  • Iron absorption
  • Mucin secretion in the mucosa (correct)
  • Hair growth
  • Which of the following is a role of retinoic acid mentioned in the text?

    <p>Regulating adrenal gland function</p> Signup and view all the answers

    What is a common symptom of vitamin A deficiency in the eye mentioned in the text?

    <p>Inflammation of cornea</p> Signup and view all the answers

    How does vitamin A deficiency affect mucous membranes according to the text?

    <p>Leads to roughness and hyper-keratinization</p> Signup and view all the answers

    What is the primary function of Vitamin E mentioned in the passage?

    <p>Acting as an antioxidant to maintain cell membrane integrity</p> Signup and view all the answers

    What is a common cause of Vitamin E deficiency based on the text?

    <p>Chronic liver diseases</p> Signup and view all the answers

    Which of the following is a manifestation of Vitamin E deficiency according to the text?

    <p>Cancer of the stomach</p> Signup and view all the answers

    Where is Vitamin K1 primarily sourced from based on the passage?

    <p>Spinach, cauliflower, and cabbage</p> Signup and view all the answers

    Study Notes

    • Vitamins are essential organic compounds that are not synthesized in the human body and must be obtained through the diet to prevent various diseases.
    • Vitamin A, found in both plant and animal sources, plays a crucial role in vision, hormone regulation, bone growth, immunity, and antioxidant activity.
    • Deficiency in vitamin A can lead to night blindness, growth retardation, rough skin, and mucous membrane issues.
    • Vitamin D, available in two forms (D2 and D3), acts as an antioxidant, prevents anemia, and has anti-sterility effects.
    • Vitamin K, mainly sourced from foods like spinach and cabbage, is essential for blood clotting factor synthesis and activation, as well as for bone health.

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    Description

    Learn about the essential characteristics of vitamins, including their importance for health and growth, their role in preventing diseases, and their minimal requirement in the diet. Explore the dietary sources of Vitamin A and its benefits in preventing night blindness and xerophthalmia.

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