$\beta$ Adrenergic Receptors That Bind Epinephrine and Initiate Fight or Flight

question 113

Multiple Choice

$\beta$ adrenergic receptors that bind epinephrine and initiate fight or flight response are arguably the most talked about G protein coupled receptors. They act through increasing levels of cAMP in the target cell. Which of the following would block the actions of the $\beta$ adrenergic receptor?

• A) depleting GTP in the cell
• B) blocking receptor translocation to the nucleus
• C) blocking protein kinase C
• D) depleting phosphatidylinositol bisphosphate in the cell

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