KROK 1 2019 – Question 3 · KROK (Medicine) · Biological Chemistry
Ammonia is extremely toxic for human CNS. What is the main way of ammonia neutralization in the nervous tissue?
- A. Transamination
- B. Urea synthesis
- C. Ammonium salts synthesis
- D. Glutamine synthesis
- E. Formation of paired compounds
Hint
Think about which ammonia-trapping reaction is available inside nervous tissue itself, where the liver pathways are absent, and why it needs ATP.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Biological Chemistry
- A patient presents with an acute attack of cholelithiasis. Laboratory examination of the patient’s feces will show the following in this case:
- During diabetes mellitus and starvation, the number of acetone bodies in blood increases. These bodies are used as a source of energy and are…
- A 45-year-old woman exhibits no signs of diabetes mellitus, but her fasting blood glucose levels are elevated (7.2 mmol/L). What should be measured…
- Examination of a patient shows decreased leukocyte and erythrocyte count and low hemoglobin levels in peripheric blood, as well as appearance of…
- A newborn presents with weak suckling, frequent vomiting, and hypotonia. Blood and urine citrulline are very high. What metabolic process is…
- Patients with ischemic heart disease are usually prescribed small doses of aspirin. This drug inhibits synthesis of platelet aggregation activator…