The Presence of CGMP in the Cytosol of a Photoreceptor

question 40

Multiple Choice

The presence of cGMP in the cytosol of a photoreceptor will directly stimulate the

• A) closure of potassium channels.
• B) opening of sodium channels.
• C) closure of sodium channels.
• D) opening of potassium channels.
• E) opening of calcium channels.

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