In the Chloroplast, Cytochrome B₆f Is an Important Complex in the Photosynthetic

Multiple Choice

In the chloroplast, cytochrome b₆f is an important complex in the photosynthetic electron transport chain because it accepts electrons from photosystem II and donates them to photosystem I. Another vital function of cytochrome b₆f is that, during its reduction-oxidation cycle, it moves _____ from the _____.

A) protons; stroma into the thylakoid lumen
B) electrons; stroma into the thylakoid lumen
C) protons; thylakoid lumen into the stroma
D) electrons; thylakoid lumen into the stroma