The correct sequence of events in the mechanism of action of a steroid hormone (e.g…
Biology · NEET · NTA Exams — Chemical Coordination and Integration
The correct sequence of events in the mechanism of action of a steroid hormone (e.g., estrogen) is:
I. Hormone-receptor complex binds to specific DNA sequences.
II. Steroid hormone diffuses into the target cell.
III. mRNA is synthesized and translated into proteins.
IV. Hormone binds to intracellular receptor in the cytoplasm/nucleus.
V. Physiological responses (e.g., tissue growth) occur.
I. Hormone-receptor complex binds to specific DNA sequences.
II. Steroid hormone diffuses into the target cell.
III. mRNA is synthesized and translated into proteins.
IV. Hormone binds to intracellular receptor in the cytoplasm/nucleus.
V. Physiological responses (e.g., tissue growth) occur.
- II → IV → I → III → V
- IV → II → I → III → V
- II → I → IV → III → V
- I → II → IV → III → V
Answer
(A) II → IV → I → III → V
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