In photosynthesis, the light-dependent reactions take place on the thylakoid
membranes. ... In oxygenic photosynthesis, the first electron donor is water,
creating oxygen .... The rate of an of elec...
Photosynthesis, like respiration, is a redox (oxidation-reduction) process-Water
molecules are split apart by oxidation, which means that they lose.
The electrons are passed through a chain of oxidation-reduction reactions. ... and
ultimately end up transferred to to a molecule called plastoquinone (PQ).
Mar 17, 2003 ... The 4 electrons removed from the water molecules are transferred by an electron
transport chain to ultimately reduce 2NADP+ to 2NADPH.
C. Sharing of electrons between adjacent oxygen molecules ..... 60. In
photosynthesis, redox reactions ultimately transfer electrons from ______ ...
Photosynthesis, Light Reactions and – Encyclopedia.com has ... is a critical
reaction in photosynthesis because the electrons removed from H2 O are
ultimately ... Most of the energy from the electron transfer reactions is stored as
redox energy ...
Similar to the way the reactions of aerobic cellular respiration rely on oxidation-
reduction reactions, electrons produced during photosynthesis are transferred to
In a redox reaction one or more molecules is reduced (gains energy) while one
or ... In cells, enzymes are responsible for reactions that transfer free energy from
one ... derived from food sources (or, in green organisms, from photosynthesis). ...
a variety of sources is funneled into what ultimately becomes a single pathway.
into chemical energy by a series of reactions that give rise to a coupled flow of
electrons ... PQ ultimately transfers electrons to a terminal electron acceptor by ...
in these reactions is PQ, the most abundant redox component in photosynthetic.
Jan 7, 2009 ... Biological redox reactions may require electron donors and/or acceptors. ... F.
Photosynthesis is an energy conversion process that ultimately .... G. How much
energy is required to transfer electrons from water to NADP<sup>+</sup>?