1. Tardigrade
  2. Question
  3. Biology
  4. textNADPH2 is generated through

Q. is generated through ______

 14  170 NTA AbhyasNTA Abhyas 2020 Report Error

Solution:

The question is about non-cyclic photo-phosphorylation. It involves both PS I and PS II. The flow of the electron is unidirectional. Electrons are not cycled back and are used in the reduction of NADP to NADPH2. Here, H2O is utilised and O2 evolution occurs. In this chain, high energy electrons released from 'P680' do not return to 'P680' but pass through phaeophytin, plastoquinone (PQ), cytochrome b6-f complex, plastocyanin and then enter P700. In this transfer of electrons from PQ to cytochrome b6-f complex, ATP is synthesised. Because high energy electrons released from 'P680' do not return to 'P680' and ATP (one molecule) is formed, this process is called non-cyclic photo-phosphorylation. ATP is synthesised at only one step.
Solution