Read the following functions carefully:
(i) H2O splitting
(ii) O2 release
(iii) NADH formation
(iv) ATP consumption
How many functions given above are carried out by PS-I during Z-scheme?
A
4
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B
\N
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C
2
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D
1
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Solution
The correct option is B \N In Z-scheme, the splitting of water is associated with the PS II; water is split into 2H+, [O] and electrons. This creates oxygen, one of the net products of photosynthesis. The electrons needed to prelace those removed from photosystem I are provided by photosystem II.
There is no ATP consumption in Z-scheme nor NADH is formed during Z-scheme. It is the NADPH that is formed.