Vitamin A Chemistry and Sources
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Questions and Answers

Which vitamin acts as a coenzyme in carbohydrate metabolism, catalyzing decarboxylation of ketoacids and in hexose monophosphate shunt?

  • Vitamin A
  • Vitamin C
  • Vitamin E
  • Thiamine (vitamin B1) (correct)
  • What is the physiological role of thiamine pyrophosphate in the body?

  • Catalyzing fatty acid synthesis
  • Promoting bone growth
  • Acting as a coenzyme in carbohydrate metabolism (correct)
  • Aiding in protein breakdown
  • Which substance is involved in the intracellular transport of long-chain fatty acids?

  • Thiamine
  • Carnitine (correct)
  • Vitamin C
  • Vitamin E
  • Why are water-soluble vitamins like thiamine not stored in large amounts in tissues?

    <p>They are rapidly excreted in urine</p> Signup and view all the answers

    What are some dietary sources of thiamine (vitamin B1)?

    <p>Green vegetables and pulses</p> Signup and view all the answers

    Which vitamin deficiency may lead to neurological symptoms such as dry beriberi?

    <p>Thiamine (vitamin B1) deficiency</p> Signup and view all the answers

    What is the main symptom associated with wet beriberi, a manifestation of thiamine deficiency?

    <p>Cardiovascular symptoms</p> Signup and view all the answers

    Which vitamin plays a role in neuromuscular transmission and carbohydrate metabolism?

    <p>Vitamin B1 (thiamine)</p> Signup and view all the answers

    What is the main function of carnitine in the body?

    <p>Intracellular transport of long-chain fatty acids</p> Signup and view all the answers

    What happens when large doses of thiamine are given orally?

    <p>Rapid excretion in urine</p> Signup and view all the answers

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