Which of the following statements accurately describes the difference between steroid and amino acid-based hormone actions?
Understand the Problem
The question is asking about the differences in the actions of steroid and amino acid-based hormones. It presents statements that describe these differences, and the user needs to identify which statement accurately describes those differences.
Answer
Steroid hormones are lipid-soluble and cross membranes; amino acid-based hormones bind to surface receptors.
Steroid hormones are lipid-soluble and can easily pass through the cell membrane to affect the target cell internally. In contrast, amino acid-based hormones are not lipid-soluble and must bind to receptors on the cell surface to exert their effects.
Answer for screen readers
Steroid hormones are lipid-soluble and can easily pass through the cell membrane to affect the target cell internally. In contrast, amino acid-based hormones are not lipid-soluble and must bind to receptors on the cell surface to exert their effects.
More Information
Steroid hormones can enter cells and directly interact with intracellular receptors, unlike amino acid-based hormones that rely on surface receptors to initiate signal transduction pathways.
Tips
A common mistake is confusing the mechanisms of entry and action between these two hormone types. Steroid hormones do not need surface receptors while amino acid-based do.
Sources
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