During light phase of photosynthesis,…….is oxidized and …….reduced.
a) NADPH – CO2
b) H2O – NADP
c) H2O – CO2
d) CO2 – H2O
There are ……possible pathways of the electrons in the light reaction of photosynthesis.
a) two
b) three
c) four
d) five
Explanation: 1. Non-cyclic electron transport and 2. Cyclic electron transport
The non-cyclic elctron transport in light reaction of photosynthesis involves……
a) photosystem I
b) photosystem II
c) both a and b
d) either a or b
When the sunlight
strikes the photosystem II, chlorophyll molecules releases…….electron/s of high
energy.
a) two
b) three
c) four
d) five
Explanation: positively charged chlorophyll molecule is left in the photosystem
In photosynthesis, the first step is…….
a) photoexcitation of chlorophyll
b) photolysis of water
c) production of NADPH2
d) synthesis of ATP
The high energy electron acceptor in non-cyclic transport of light reaction is called……..
a) plastocyanin
b) plastoquinine
c) cytochrome b
d) cytochrome f
Explanation: Plastoquinone (PQ) is an isoprenoid quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis.
