All of the following have receptors which are transcription factors except____________?
Correct answer: A. Insulin
- A. Insulin
- B. Estrogen
- C. Vitamin D
- D. Glucocorticoid
Explanation
Insulin acts through a cell-surface receptor with intrinsic tyrosine-kinase activity rather than a nuclear transcription factor. Estrogen, vitamin D and glucocorticoids bind intracellular receptors that regulate gene transcription.
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