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    Exam 10: Sensory Physiology
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    What Causes CGMP to Convert to GMP and Close Na<sup>+</sup>
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What Causes CGMP to Convert to GMP and Close Na+

Question 145

Question 145

Multiple Choice

What causes cGMP to convert to GMP and close Na+ channels in a photoreceptor?


A) dark current
B) light
C) darkness
D) opsin

Correct Answer:

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