\Vhen light strikes the rhodopsin in a rod, retinal

Chapter 0, Problem 5

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\Vhen light strikes the rhodopsin in a rod, retinal isomerizes, initiating a signal transduction pathway that a. depolarizes the neighboring bipolar cells and initiates an action potential in a ganglion cell.b. depolarizes the rod, causing it to release theneurotransmitter glutamate, which excites bipolar cells.c. hyperpolarizes the rod, reducing its release of glutamate,which excites some bipolar cells and inhibits others.d. hyperpolarizes the rod, increasing its release of glutamate,which excites amacrine cells but inhibits horizontal cells.e. converts cGMP to GMp, opening sodium channels andhyperpolarizing the membrane, causing the rhodopsin tobecome bleached.

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