As per Wikipedia, there are three types of cone cells. Quoting Wikipedia:
I searched a bit more, and found that there are three different types of iodopsin pigment in these cells. Quoting Wikipedia again:Humans normally have three types of cones. The first responds the most to light of long wavelengths, peaking at about 560 nm ; this type is sometimes designated L for long. The second type responds the most to light of medium-wavelength, peaking at 530 nm, and is abbreviated M for medium. The third type responds the most to short-wavelength light, peaking at 420 nm, and is designated S for short. The three types have peak wavelengths near 564–580 nm, 534–545 nm, and 420–440 nm, respectively, depending on the individual.
Can you say what reaction occurs for each of the pigments when they are exposed to light of wavelength of the maxima?In humans there are 3 different iodopsins (rhodopsin analogs) that contain the protein-pigment complexes photopsin I, II, and III.
The 3 types of iodopsins are called erythrolabe(photopsin I + retinal), chlorolabe(photopsin II + retinal), and cyanolabe(photopsin III + retinal).
These photopsins have absorption maxima for red ["erythr"-red] (photopsin I), green ["chlor"-green] (photopsin II), and bluish-violet light ["cyan"-bluish violet] (photopsin III).