Aldosterone Is a Steroid Hormone That Regulates the Balance of Ions

question 93

Multiple Choice

Aldosterone is a steroid hormone that regulates the balance of ions in the body by increasing transcription and insertion of Na⁺ channels in kidney epithelial cells. Which statements are correct about the signal transduction pathway aldosterone initiates in kidney epithelium?

• A) aldosterone binds to plasma membrane receptors
• B) occupied aldosterone receptors directly bind to DNA
• C) second messengers activate protein kinases and phosphorylation
• D) relay molecules pass the signal from receptor to the nucleus

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