The Shared Properties of the Two Photosystems (I and II)with

Multiple Choice

The shared properties of the two photosystems (I and II) with respect to protein composition and overall architecture suggest that __________.

A) both absorb exactly the same wavelength of light
B) all photosynthetic reaction centers have evolved from a common ancestral structure that has been conserved for a long time (more than 3 billion years)
C) all photosynthetic reaction centers have their own unique ancestor
D) all photosynthetic reaction centers have evolved separately within the last 100,000 years
E) all photosynthetic reaction centers evolved from unrelated structures