Question

During light reaction, as electrons move through photosystems, protons are transported across the membrane. This happens because of

• A. The primary acceptor of e– transfers only $H^{+}$ to the next carrier.
• B. The primary acceptor of $e^{–}$ (located towards the outer surface of the membrane) transfers its electron not to an $e^{–}$ carrier but to H carrier.
• C. The primary acceptor of $e^{–}$ transfers only its $e^{–}$ to $e^{–}$ carrier.
• D. NADP - reductase is present in grana.

Answer 1

The correct option is B The primary acceptor of $e^{–}$ (located towards the outer surface of the membrane) transfers its electron not to an $e^{–}$ carrier but to H carrier.

During light reaction, as electrons move through the photosystems, protons are transported across the membrane because of the primary acceptor of $e^{–}$ (located towards the outer surface of the membrane) transfers its electrons not to an $e^{–}$ carrier but to $H^{+}$ carrier.