A photosynthetic reaction centre is a complex of several proteins, pigments and
other co-factors ... These electron transfer steps are the initial phase of a series of
energy conversion reactions, ....
Photosynthesis, like respiration, is a redox (oxidation-reduction) process-Water
molecules are split apart by oxidation, which means that they lose.
The reactions that extract energy from molecules like glucose are called .... from a
higher to a lower energy level and are ultimately passed to oxygen (forming
water). ..... Reactions involving electron transfers are known as oxidation-
Nov 20, 2013 ... We know that redox reactions occur in the direction of stronger to weaker ... This
process of energy transfer is called electron transfer. ... Ultimately, light
absorption by P680 forms excited state P680* which donates an electron ...
Definition of Photosynthesis, Light Reactions and – Our online dictionary has ... in
photosynthesis because the electrons removed from H2 O are ultimately used to
... Most of the energy from the electron transfer reactions is stored as redox ...
The coupling of the two light reactions in a linear electron transfer chain forms ...
pool, the cytochrome b6f complex (Cytb6f), and plastocyanin to PSI and
ultimately to ... In particular, the redox state of various photosynthetic electron
In some of these reactions, small organic molecules—amino acids, sugars,
nucleotides, and lipids—are ... Photosynthetic Organisms Use Sunlight to
Synthesize Organic Molecules ... As a result, all of the energy used by animal
cells is derived ultimately from the sun. ... Oxidation and Reduction Involve
In the process of photosynthesis, light energy is absorbed by chlorophyll and is
ultimately converted into other types of ..... Many chemical reactions result in the
transfer of electrons from one atom or molecule to another; this ... In an oxidation-
reduction reaction, we also use the oxidation potential — the voltage change that
Mar 17, 2003 ... Photosystem II transfers electrons from water to plastoquinone and in the process
generates a ... The overall reaction of PSII is shown below.
As electrons pass through the photosynthetic electron transport (PET) chain the ...
is an integrating regulatory redox hub that controls both the efficiency of electron
... These excited states are ultimately transferred to chl a to form the first singlet (
S1) ... An important property of the reaction centres of both photosystems is the...