Tossup

A protein serving as a transfer agent into one of these complexes was the first “blue copper” protein to have its antiparallel beta barrel structure characterized. Proteins like R-PE and B-PE create rods of stacked cylindrical subunits in one of these complexes called phycobilisomes. A subunit of one of these complexes goes through five states labeled S-sub-0 (10[1])to S-sub-4 in a cycle named for Bessel Kok. Three clusters in one of these complexes labelled Fx, Fa, and Fb facilitate electron transfer to ferredoxin. (-5[1])Cytochrome b6f, plastoquinone, and plastocyanin shuttle electrons between two of these complexes, (10[1])one of which contains the oxygen-evolving complex. (-5[1])For 10 points, name these protein complexes inside thylakoid membranes (10[1])involved (10[1])in the light-dependent reactions (-5[1])of photosynthesis, which are labeled I and II. ■END■ (10[2]0[6])

ANSWER: photosystems [accept photosystem I or photosystem II or PS I or PS II; accept P680 or P700; accept plastocyanin-ferredoxin oxidoreductase or water-plastoquinone oxidoreductase; prompt on thylakoids or thylakoid membranes until read; prompt on chloroplasts; prompt on oxygen-evolving complex until read by asking “what structure is that located within?”]
<MS, Biology>
= Average correct buzz position

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