Question

d) Observe the image given below and identify A, B, C, and D.
029A Stus
С
B​

Answer 1

Answer:

D

A-Photo-system II; B- e

−

acceptor; C-e

−

transport system; D- photo-system I; E- NADPH.

A. In the non-electron transport pathway, the light energy of specific wavelengths is absorbed by chlorophylls and accessory pigments of PS II. These pigments transfer their absorbed energy to PS II reaction centre- P

680

.

B. The reaction centre- P

680

becomes photoexcited and exudes an electron with a gain of energy. The electron is immediately accepted by the primary acceptor quinone.