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Do polar hormone molecules pass directly through cell membranes and bind to intracellular receptors?

Answer 1

No, polar hormone molecules do not pass through cell membranes.

A hormone is a regulatory chemical that is secreted into the blood.

The blood carries a hormone to every cell in the body, but only the target cells for that hormone can respond to it.

Nonpolar hormones like steroids can pass through the plasma membrane unaided, but polar hormones like amino acid derivatives cannot pass through the membrane.

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Answer 2

Addison Adams

Polar hormone molecules bind to cell surface receptors and initiate a signaling cascade inside the cell, which ultimately results in changes in gene expression or other cellular responses. Polar hormone molecules do not cross cell membranes directly.

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Answer from HIX Tutor

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