KROK 1 2016 – Question 137 · KROK (Medicine) · Biological Chemistry

After an extended treatment with sulfonamides a patient has developed macrocytic anemia. Production of active forms of the following vitamin is disrupted in such a condition:

  1. A. Cyanocobalamin
  2. B. Folic acid
  3. C. Pyridoxine
  4. D. Riboflavin
  5. E. Thiamine
Hint

Ask how the antibacterial drug works on microbial metabolism and which vitamin-dependent step of DNA building-block synthesis would then fall short in dividing cells.

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