Question

What are the two complexes of pigments that constitute a photosystem?

Answer 1

The antenna pigments are predominantly chlorophyll b, xanthophylls, and carotenes. ... Each antenna complex has between 250 and 400 pigment molecules and the energy they absorb is shuttled by resonance energy transfer to a specialized chlorophyll-protein complex known as the reaction center of each photosystem.

Answer 2

Answer:

The actual step that converts light energy into chemical energy takes place in a multiprotein complex called a photosystem, two types of which are found embedded in the thylakoid membrane, photosystem II (PSII) and photosystem I (PSI) (Figure 2).