KROK 1 2014 – Question 177 · KROK (Medicine) · Biological Chemistry

A patient complains of photoreception disorder and frequent acute viral diseases. He has been prescribed a vitamin that affects photoreception processes by producing rhodopsin, the photosensitive pigment. What vitamin is it?

  1. A. Pyridoxine hydrochloride
  2. B. Thiamine
  3. C. Retinol acetate
  4. D. Tocopherol acetate
  5. E. Cyanocobalamin
Hint

Consider the biochemical cycle of the visual pigment in rod cells and which vitamin's derivative takes part in it.

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