When a Photoreceptor Cell Is Stimulated by Light

question 34

Multiple Choice

When a photoreceptor cell is stimulated by light:

• A) the photoreceptor hyperpolarizes as sodium ion channels close.
• B) transducin and phosphodiesterase (PDE) are inactive.
• C) opsin and ^{cis -}retinal combine to form rhodopsin.
• D) sodium ions enter the outer segment of the photoreceptor and depolarize it.

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