Which of the Following Is True of Photoreceptors in the Light

question 61

Multiple Choice

Which of the following is true of photoreceptors in the light (relative to the dark) ?

• A) The photoreceptors are depolarized.
• B) Sodium channels are open.
• C) The synaptic terminal is releasing more transmitter.
• D) Phosphodiesterase is more active.
• E) cGMP levels are elevated.

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