AP Biologymediummcq1 pt
Steroid hormones like testosterone trigger responses by
A.binding intracellular receptors that regulate transcription
B.binding cell-surface GPCRs
C.opening ligand-gated ion channels
D.activating kinases at the membrane
Explanation
Core Concept
Steroids are hydrophobic, so they cross the membrane and bind cytoplasmic/nuclear receptors; the complex acts as a transcription factor, changing gene expression.
Correct Answer
Abinding intracellular receptors that regulate transcription
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