What structure is formed by the reaction center, light-harvesting complexes, and primary electron acceptors that cluster in the thylakoid membrane?

Where do the electrons entering photosystem II come from?

Which of the following is cycled in the cyclic variation of the light reactions?

Both mitochondria and chloroplasts __________.

During photosynthesis in a eukaryotic cell, an electrochemical gradient is formed across the __________.

The light reactions of photosynthesis generate high-energy electrons, which end up in __________ through linear electron flow. The light reactions also produce __________ and __________.

The energy used to produce ATP in the light reactions of photosynthesis comes from __________.