Resepters for protein hormones are located
Answers
Answer:
Consequently, receptors for peptide hormones are located on the plasma membrane because they have bound to a receptor protein located on the plasma membrane. Water-soluble hormones come from amino acids and are located and stored in endocrine cells until actually needed.
Explanation:
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Answer:
^ On the cell surface
Explanation:
* Consequently, receptors for peptide hormones are located on the plasma membrane because they have bound to a receptor protein located on the plasma membrane. Water-soluble hormones come from amino acids and are located and stored in endocrine cells until actually needed.
* Proteins cannot cross the plasma membrane, so the receptors of proteinaceous signalling factors must be outside the cell
* i.e., embedded in the plasma membrane unlike steroid hormones, which is lipid in nature and can easily enter the cell.
* For protein hormones, the receptor is membrane associated and embedded in the plasma membrane at the surface of the cell. The interaction of hormone and receptor typically triggers a cascade of secondary effects within the cytoplasm of the cell, often involving phosphorylation or dephosphorylation of various other cytoplasmic proteins, changes in ion channel permeability, or increased concentrations of intracellular molecules, that may act as secondary messengers (e.g., cyclic AMP).
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