KROK 1 2008 – Question 64 · KROK (Medicine) · Biological Chemistry
A cerebral trauma caused increased ammonia generation. What amino acid participates in the excretion of ammonia from the cerebral tissue?
- A. Lysine
- B. Glutamic
- C. Tryptophan
- D. Valine
- E. Tyrosine
Hint
Ammonia is very toxic to nerve tissue, so the brain must bind it in a harmless form for transport out. Compare the listed amino acids and ask which of them is the one used for this in the brain.
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