Peptide hormones such as insulin cannot pass through the plasma membrane so they bind to receptors on the target cellʹs surface, triggering the production of second messengers.

Question

Quizplus · Accepted Answer

Peptide hormones are hydrophilic and cannot easily cross the lipid bilayer of the plasma membrane, so they bind to receptors on the cell surface, initiating a cascade of intracellular events through second messengers.

Peptide Hormones Such as Insulin Cannot Pass Through the Plasma