KROK 1 2012 – Question 191 · KROK (Medicine) · Biological Chemistry
A male patient has been diagnosed with acute radiation disease. Laboratory examination revealed a considerable reduction of platelet serotonin level. The likely cause of platelet serotonin reduction is the disturbed metabolism of the following substance:
- A. 5-oxytryptofane
- B. Phenylalanine
- C. Serine
- D. Histidine
- E. Tyrosine
Hint
Think about the biosynthetic pathway by which platelets and other cells build serotonin step by step from an amino acid.
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