The arrangement of photosystems I and II in the thylakoid membrane is exactly like that drawn in the Z-pathway of most textbooks.

Question

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The Z-scheme (or Z-pathway) is a simplified, idealized representation of the photosystems' arrangement and their electron transport chain in the thylakoid membrane, used for teaching and conceptual purposes. The actual spatial arrangement of photosystems I and II in the thylakoid membrane is more complex and not strictly linear as depicted in the Z-scheme.

The Arrangement of Photosystems I and II in the Thylakoid