B.9. Bio-Pigment Flashcards
1
Q
What does the electronic transitions within molecules of the pigments cause them to do?
A
Selectively absorb certain freq. of visible light = reflecting unabsorbed freq.
→ Stimulates the retina
2
Q
Porphyrin rings features (4)
A
1) Large
2) Planar
3) Nitrogen containing
4) 4 rings each being 5 membered [4C and 1N]
3
Q
Chelating agents
A
compound containing a ligand (typically organic) bonded to a central metal atom at 2 or more pts.
