In the Model of a Bacteriorhodopsin, Which Pigment is Bound

Question

In the model of a bacteriorhodopsin, which pigment is bound to the protein?
A) rhodopsin
B) retinal
C) chlorophyll a
D) indigo

Accepted Answer

Bacteriorhodopsin binds with retinal, a derivative of vitamin A, which acts as the pigment in the protein complex.