A) plasmalemma
B) plastoquinone
C) plastocyanin
D) ferredoxin
Correct Answer: C
Solution :
Plastocyanin is a copper containing protein that accepts electrons by the copper cycling between \[C{{u}^{2+}}\]and \[C{{u}^{+}}\]states during photophosphorylation. \[PQ{{H}_{2}}+2PC(C{{u}^{2+}})\xrightarrow{cyt.{{b}_{6}}complex}\] \[PQ+2PC\,(C{{u}^{+}}+2{{H}^{+}}\] Iron \[(F{{e}^{2+}}F{{e}^{3+}})\] is found in ferredoxin, which is required in electron transport in photosynthesis and respiration. Plasmalemma (cell membrane) is composed of lipids, protein and carbohydrates.
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