KROK 1 2020 – Question 139 · KROK (Medicine) · Biological Chemistry
A patient has frequent visceral and mucosal hemorrhages. Analysis shows that the collagen fibers in the patient’s body lack hydroxyproline and hydroxylysine. The hydroxylation processes of these amino acids are disrupted because of a vitamin deficiency. What vitamin is deficient in this case?
- A. K
- B. H
- C. PP
- D. A
- E. C
Hint
Ask which vitamin supports the hydroxylating enzymes of collagen synthesis, and why weak collagen would make the small vessels fragile.
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