Q: When light strikes rhodopsin, the g-protein transducin is activated, which in turn activates what?


Read this paragraph and choose the correct option from the provided answers:

Figure 36.20 When light strikes rhodopsin, the G-protein transducin is activated, which in turn activates phosphodiesterase. Phosphodiesterase converts cGMP to GMP, thereby closing sodium channels. As a result, the membrane becomes hyperpolarized. The hyperpolarized membrane does not release glutamate to the bipolar cell.

 Choices:

- aldosterone

- photosynthesis

- hydrolysis

- phosphodiesterase


A:
phosphodiesterase