1) What must be true for a cell to respond to a hormone? 2) Which hormones or cl
ID: 252463 • Letter: 1
Question
1) What must be true for a cell to respond to a hormone? 2) Which hormones or classes of hormones are (give some examples) polar nonpolar (location) and act through 3) Generally, the receptors for nonpolar hormones are 4) Generally, receptors for polar hormones are 5) We now have three signal transduction pathways that we know in some detail. You should be able to describe these pathways, step-by-step, from (location) & act through hormone binding to cellular response. Choose one of the three and tryExplanation / Answer
1. a cell is a target cell for a hormone if it includes useful receptors for that hormone and cells which do not possess such receptor they cannot be affected directly by that hormone.
2. polar hormones signal through G-protein coupled receptors or seven transmembrane domain proteins.
The nonpolar hormones are the vitamin D, steroid hormones, and thyroid hormones.
3. intracellular receptors (nuclear receptors)
act through binding to DNA.
4. plasma membrane
polar hormone plays important role in storage, secretion, and action. Hormone receptors in the target cell activate signal transduction pathways which in turn alter cellular activity.
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