Which of the Following Is a Common Step in the Opening/closing

question 11

Multiple Choice

Which of the following is a common step in the opening/closing of ion channels by acetylcholine and rhodopsin binding to their receptors?

• A)The Gα·GTP subunit dissociates from the Gβγ complex.
• B)The released Gα·GTP subunit interacts with the ion channel.
• C)The released Gβγ complex interacts with the ion channel.
• D)The released Gα·GTP subunit activates cGMP phosphodiesterase.

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