Question 1
Distinguish between the mode of action of steroid hormones and peptide hormones.
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Distinguish between the mode of action of steroid hormones and peptide hormones.
| Steroid hormones | Peptide hormones |
|---|---|
| enter the cell/pass through the plasma membrane | do not enter the cell/pass through the plasma membrane |
| bind to receptor in cytoplasm | bind to receptor on plasma membrane surface |
| act directly on DNA | act through second messenger/cAMP |
| directly affect gene transcription | influence enzyme activity/protein kinase |