KROK 1 2016 – Question 34 · KROK (Medicine) · Biological Chemistry
A 7-year-old child in the state of allergic shock caused by a bee sting has been delivered into an emergency ward. High concentration of histamine was observed in blood. Production of this amine was the result of the following reaction:
- A. Deaminization
- B. Decarboxylation
- C. Dehydrogenation
- D. Hydroxylation
- E. Reduction
Hint
Compare histidine with histamine and ask what has been removed from the amino acid skeleton to give the amine.
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
- Human red blood cells contain no mitochondria. What is the main pathway for ATP production in these cells?
- Along with normal hemoglobin types there can be pathological ones in the organism of an adult. Name one of them:
- The key reaction of fatty acid synthesis is production of malonyl-CoA. What metabolite is the source of malonyl-CoA synthesis?
- It is known that in catecholamine metabolism a special role belongs to monoamine oxidase (MAO). This enzyme inactivates mediators (noradrenalin…
- A patient, who has been subsisting exclusively on polished rice, has developed polyneuritis due to thiamine deficiency. What substance is an…
- When blood circulation in the damaged tissue is restored, lactate accumulation stops and glucose consumption decelerates. These metabolic changes…