<P> The photosynthesis process in chloroplasts begins when an electron of P680 of PSII attains a higher - energy level . This energy is used to reduce a chain of electron acceptors that have subsequently lowered redox - potentials . This chain of electron acceptors is known as an electron transport chain . When this chain reaches PS I , an electron is again excited , creating a high redox - potential . The electron transport chain of photosynthesis is often put in a diagram called the z - scheme , because the redox diagram from P680 to P700 resembles the letter z . </P>
<P> The photosynthesis process in chloroplasts begins when an electron of P680 of PSII attains a higher - energy level . This energy is used to reduce a chain of electron acceptors that have subsequently lowered redox - potentials . This chain of electron acceptors is known as an electron transport chain . When this chain reaches PS I , an electron is again excited , creating a high redox - potential . The electron transport chain of photosynthesis is often put in a diagram called the z - scheme , because the redox diagram from P680 to P700 resembles the letter z . </P>
where do the light reactions take place within the chloroplast
where do the light reactions take place within the chloroplast
electron transport chain
electron transport chain