Question

Photosystem,which is directly responsible for reduction of $NAD{P}^{+}$ to $NADPH+H^{+}$,has an absorption peak at:-

• A. $700nm$
• B. $680nm$
• C. $430nm$
• D. $550nm$

Answer 1

The correct option is A $700nm$

Photosystems are the structural and functional unit of photosynthetic light harvesting complexes. These photosystems are of two types: photosystem 1 (680 nm) and photosystem 2(700 nm). Photosystem 2 has an absorption peak of 700 nm. In this process, after the absorption of light, electron get excited and is then transferred through different electron carriers to produce ATP and NADPH.

So, the correct option is '700 nm'