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How does steroid hormone influence the cellular activities?

1. Changing the permeability of the cell membrane.
2. Binding to DNA and forming a gene-hormone complex.
3. Activating cyclic AMP located on the cell membrane.
4. Using aquaporin channels as second messenger.

Correct answer: Binding to DNA and forming a gene-hormone complex.

Solution

Steroid hormones are lipid-soluble, so they diffuse through the cell membrane and bind receptors inside the cell. The hormone-receptor complex then binds DNA and regulates transcription, which changes cellular activity.

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