A2/ A level Photosynthesis WJEC

Four complete powerpoints to use for the WJEC Photosynthesis topic Unit 3.2

(a) the distribution of chloroplasts in relation to light trapping
(b) chloroplasts acting as transducers converting the energy of light photons into the
chemical energy of ATP
© the process of light harvesting and the absorption of various wavelengths of light
by chlorophyll and associated pigments and the energy transfer to reaction
centres
(d) the basic features of Photosystems I and II
(e) cyclic and non-cyclic photophosphorylation as sources of electrons for the
electron transport chain
(f) photolysis as a source of electrons for Photosystem II
(g) the reduction of NADP by the addition of electrons and hydrogen ions in the
stroma maintaining the proton gradient
(h) reduced NADP as a source of reducing power and ATP as a source of energy
for the following reactions: the light-independent stage and the formation of
glucose; uptake of carbon dioxide by ribulose bisphosphate to form glycerate-3-
phosphate catalysed by Rubisco
(i) the reduction of glycerate-3-phosphate to produce triose phosphate
(carbohydrate) with the regeneration of ribulose bisphosphate