Vitamin D is considered a prohormone, meaning it needs to be converted into its active form (calcitriol) in the kidneys to function as a hormone. The body produces vitamin D in the skin when exposed to sunlight, and it can also be obtained through diet.
Which of the following vitamins serves as a hormone precursor?
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Question context
This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.