Chemistry of Visual Pigments Flashcards
1
Q
What is the light absorbing molecule?
A
Retinal
2
Q
How does Retinal work?
A
Combines with one of four opsins to form visual pigments.
3
Q
When Retinal is synthesized what does it form?
A
Vitamin A
4
Q
What are the 2 forms of Retinal?
A
cis- & trans-
5
Q
What leads to a transmission of AP’s in the optic nerve?
A
Conversion of Retinal from one form to the other is the stimulus.
