When a Photoreceptor Cell Is Stimulated by Light

question 112

Multiple Choice

When a photoreceptor cell is stimulated by light:

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

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