A light-capturing unit in a chloroplast’s thylakoid membrane that has two molecules of P680 chlorophyll a at its reaction center. (It is called P680 because this pigment is best at absorbing light having a wavelength of 680 nm).Group of answer choicesprimary electron acceptorreaction-center complexPEP carboxylasephotosystemrubisco

A light-capturing unit in a chloroplast’s thylakoid membrane has two molecules of P700 chlorophyll a at its reaction center. (It is called P700 because it most effectively absorbs light of wavelength 700 nm).Group of answer choicesreaction-center complexphotosystemrubiscoPEP carboxylaseprimary electron acceptorNext

In the thylakoid membrane of a chloroplast, a specialized molecule that shares the reaction-center complex with a pair of chlorophyll a molecules and that accepts an electron from them.Group of answer choicesreaction-center complexPEP carboxylaseNADP⁺primary electron acceptorlight-harvesting complexphotosystemrubiscoG3P