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long cyclic photophosphorylation when I
said noncyclic photophosphorylation it
includes both ps1 and ps2 that is
pigments is someone and pigment system
to both the reaction centers that is
T700 of pigment system 1 and p680
of pigment system to both take part in
noncyclic photophosphorylation during
Noncyclic photophosphorylation the
amount of ATP or NADPH and retain Asuma
it's much much greater as compared to
cyclic photophosphorylation the electron
acceptors do not move in cyclic manner
there is a breakage the electron never
comes back to the same reaction center
from which it was emitted or removed out
doing noncyclic photophosphorylation
there is photolysis of water or you can
say break down - a photo it means son
and - Ellis's it means break down in the
presence of sunlight so photolysis of
water is also done during
noncyclic photophosphorylation the
hydrogen or etched glass that is
generated during photolysis of water is
accepted by NADPH which get reduced to
NADPH - it ignores fa d and NADP
reductase enzyme basically noncyclic
photophosphorylation forms this edge
scheme or you can say that says state
pattern so the electron which starts
from PS 1 never gets back to PS 1
basically the electron starts from PS 2
and goes to PS one during noncyclic
photophosphorylation
noncyclic photophosphorylation now
during noncyclic photophosphorylation
ATP synthesis of production takes place
and this ATP synthesis is much more
greater during noncyclic
photophosphorylation nan ii for the
conservation use both the reaction
center that is ps1 and ps2 pigment
system 1 and pigment system 2
during noncyclic photophosphorylation
one of the most important thing that
happens is photolysis
of water or you can say breakdown of
water molecules in the presence of
sunlight and this photolysis of water
generates H+ and OH h- ends now the H+
ions are accepted by editing to get I
honest and this reduced nad p forms
NADPH - which helps an electron
exception so let us see how actually
electrons are accepted during
noncyclic photophosphorylation this is
the flow sheet or you can say the
pathway through which electrons are
accepted first sun's energy would fall
on ps2 or reaction center - which has
energy of 680 the chlorophyll a accepts
sun's energy and once it has accepted
sun's energy it gets excited and we all
know once an electron or molecule is
excited
it will move ahead inner ship we all
have studied that during chemistry
so the excited curves lay X M its
electron and this emitted electron is
accepted by the first electron acceptor
which is plastic Union or tu now then
this emits electron it is passed to
cytochrome B 6 it further emits electron
and which is passed on to cytochrome F
then the electron is passed to plus 2
sine or the last reaction molecule of PS
- and now that electron from BS 2 is
passed on to ps1 a pigness is someone
which has a reaction center of p700 in
this the electron passes to there is
electron acceptors the first one is f
anise which is paradox in reducing
substance then the electron is passed to
ferredoxin and finally the ionization of
NADPH to take space that is nicotinamide
adenine dinucleotide phosphate is form
during this reaction photolysis of water
takes place which further helps
in ionization of NADPH two students in
this part of the chapter of who
noncyclic photophosphorylation we have
studied how electron which was removed
or given by es to never gets back or
goes back to PS 2 and this was noncyclic
photophosphorylation basically cyclic
photophosphorylation and noncyclic
photophosphorylation are light dependent
or they depend on sunlight and they both
contribute to photosynthesis in daytime
I hope you are clear with the concept of
noncyclic photophosphorylation thank you
