Multiple Choice
How do lipid-soluble hormones carry out their actions at their target cells?
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16. The Endocrine System
Intracellular Receptors and Direct Gene Action
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How do lipid-soluble hormones (primary messengers) initiate a change in the cell?
A
They bind to receptors on the cell surface, activating second messengers.
B
They activate ion channels on the cell membrane, altering the cell's electrical state.
C
They diffuse through the cell membrane and bind to intracellular receptors.
D
They are transported into the cell via endocytosis and then bind to nuclear receptors.
Verified step by step guidance1
Understand the nature of lipid-soluble hormones: These hormones are able to pass through the lipid bilayer of the cell membrane due to their solubility in lipids.
Recognize the mechanism of action: Lipid-soluble hormones diffuse directly through the cell membrane without the need for transport proteins or channels.
Identify the location of receptors: Once inside the cell, these hormones bind to intracellular receptors, which are typically located in the cytoplasm or nucleus.
Explore the hormone-receptor interaction: The hormone-receptor complex then interacts with specific DNA sequences, influencing gene expression and initiating changes in the cell.
Consider the physiological impact: The changes in gene expression lead to the production of proteins that alter cell function, resulting in the physiological effects associated with the hormone.
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