Chapter 41, Problem 7TYK

Which of the following events does not occur during light absorption in the vertebrate eye?

The retinal component of rhodopsin changes from cis to trans form.

Rhodopsin, a G-protein–coupled receptor, triggers a signaltransduction pathway to close Na⁺ channels in the plasmamembrane.

The light stimulus passes from rods and cones to bipolar cellsand horizontal cells and then to ganglion cells, whose axonscompose the optic nerve.

As light absorption increases, the rhodopsin response causesan increase in the release of neurotransmitters.

When integrating information across the retina, horizontalcells connect the rods and cones, and amacrine cells join with the bipolar cells and ganglion cells.