SEARCH
You are in browse mode. You must login to use MEMORY

   Log in to start


From course:

A Level Biology Edexcel: Topic 5 - 8

» Start this Course
(Practice similar questions for free)
Question:

What happens in our eyes in light?

Author: seremi amune



Answer:

Light is absorbed by rhodopsin breaking it down into opsin and trans-retinal opsin activate the hydrolysis of a cyclic molecule attached to the cation channel in the outer segment the breakdown of the molecule results in the closure of the cation channel so less Na+ enters the cell and the inner segment keeps pumping Na+ out so the inside of the cell is more negative the cell becomes hyperpolarised so the release of glutamate stops and the bipolar cell can depolarise


0 / 5  (0 ratings)

1 answer(s) in total