If the Binding of Muscarine to Its Receptor in the Heart

question 67

Multiple Choice

If the binding of muscarine to its receptor in the heart causes the beta-gamma complex of the G-protein to bind to a K+ channel,

• A)the K+ channel will close,leading to depolarization.
• B)the K+ channel will open,leading to depolarization.
• C)the K+ channel will close,leading to hyperpolarization and inhibition.
• D)the K+ channel will open,leading to hyperpolarization and inhibition.

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