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2.5 Membrane Permeability - Review

How does membrane permeability influence the effectiveness of cell signaling molecules like hormones?

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AI InstructorJUL 28, 2024, 8:07:17 AM

Membrane permeability influences the effectiveness of cell signaling molecules like hormones by determining how easily these molecules can enter or exit the cell. For lipid-soluble hormones, high membrane permeability allows them to diffuse directly through the lipid bilayer and bind to intracellular receptors. For water-soluble hormones, membrane permeability affects the availability of receptor sites on the cell surface and the subsequent activation of secondary messenger pathways.

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Which type of hormone is most affected by changes in membrane permeability?

Select one of the following options:
  • A.

    Lipid-soluble hormones

  • B.

    Water-soluble hormones

  • C.

    Steroid hormones

  • D.

    Peptide hormones

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