KROK 1 2012 – Question 82 · KROK (Medicine) · Biological Chemistry
Vitamin A together with specific cytoreceptors penetrates through the nuclear membranes, induces transcription processes that stimulate growth and differentiation of cells. This biological function is realized by the following form of vitamin A:
- A. Cis-retinal
- B. Trans-retinal
- C. Retinol
- D. Trans-retinoic acid
- E. Carotin
Hint
Vitamin A has a visual role and a separate genomic role; ask which of its forms is the one that controls gene expression in the cell nucleus.
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