KROK 1 2009 – Question 63 · KROK (Medicine) · Biological Chemistry
The greater amount of nitrogen is excreted from the organism in form of urea. Inhibition of urea synthesis and accumulation of ammonia in blood and tissues are induced by the decreased activity of the following liver enzyme:
- A. Aspartate aminotransferase
- B. Amylase
- C. Urease
- D. Pepsin
- E. Carbamoyl phosphate synthetase
Hint
Urea is made in the liver by a cycle; ask which step of that cycle first consumes free ammonia and therefore controls the entry of nitrogen into the pathway.
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