KROK 1 2007 – Question 52 · KROK (Medicine) · Biological Chemistry
Examination of a patient with frequent hemorrhages from internals and mucous membranes revealed proline and lysine being a part of collagene fibers. What vitamin absence caused disturbance of their hydroxylation?
- A. Vitamin A
- B. Vitamin E
- C. Vitamin K
- D. Vitamin C
- E. Thiamine
Hint
Think about the water-soluble cofactor that keeps the iron of prolyl and lysyl hydroxylases reduced, and whose lack leads to bleeding gums and fragile capillaries.
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