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Home Biochemistry Vitamins and Coenzymes Comments

  • Question
  • The disease Beriberi is due to a dietary deficiency in


  • Options
  • A. vitamin B1 (thiamine)
  • B. vitamin B2 (riboflavin)
  • C. vitamin B6 (pyridoxine)
  • D. vitamin B12

  • Correct Answer
  • vitamin B1 (thiamine) 


  • Vitamins and Coenzymes problems


    Search Results


    • 1. A fat-soluble vitamin that regulates blood clotting is

    • Options
    • A. vitamin A
    • B. vitamin K
    • C. vitamin C
    • D. niacin
    • Discuss
    • 2. The absence of ascorbic acid in the human diet gives rise to

    • Options
    • A. rickets
    • B. pernicious anemia
    • C. cataract
    • D. beri-beri
    • Discuss
    • 3. The vitamin riboflavin is part of the __________ molecule.

    • Options
    • A. ferredoxin
    • B. FAD
    • C. pyridoxal phosphat
    • D. pyrophosphate
    • Discuss
    • 4. The most prominent role that tocopherol has in in-vitro systems is as a strong

    • Options
    • A. antioxidants
    • B. reducing agent
    • C. oxidizing agent
    • D. all of these
    • Discuss
    • 5. The prosthetic group biotin is a carrier of which type of molecule?

    • Options
    • A. Activated carbon dioxide (CO2)
    • B. Ammonia
    • C. Methyl group
    • D. Sulfhydryl group
    • Discuss
    • 6. The occurrence of metals such as iron or molybdenum in some flavoproteins can

    • Options
    • A. stabilize the semiquinone
    • B. de-stabilize the semiquinone
    • C. form chelation
    • D. all of these
    • Discuss
    • 7. Vitamin B12 is useful in the prevention and treatment of

    • Options
    • A. pernicious anemia
    • B. scurvy
    • C. cataract
    • D. beri-beri
    • Discuss
    • 8. Which of the following compounds/(s) belong/(s) to the vitamin B6 group?

    • Options
    • A. Pyridoxal
    • B. Pyridoxine
    • C. Pyridoxamine
    • D. All of these
    • Discuss
    • 9. A deficiency of thiamin produces the disease known as

    • Options
    • A. beri-beri
    • B. scurvy
    • C. cataract
    • D. anemia
    • Discuss
    • 10. Which of the following are reduced coenzymes?

    • Options
    • A. NADH and FADH2
    • B. NAD+ and FAD
    • C. ATP and GTP
    • D. Coenzyme A and ubiquinone
    • Discuss


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