Topic 8.3: Photosynthesis
Essential Idea: Light energy is converted into chemical energy.
At SHS, Topic 8.3 is taught in the following class unit(s):
Statements & Objectives:
8.3.U1 Light-dependent reactions take place in the intermembrane space of the thylakoids.
8.3.U2 Light –independent reactions take place in the stroma.
8.3.U3 Reduced NADP and ATP are produced in the light-dependent reactions.
8.3.U4 Absorption of light by photosystems generates excited electrons.
8.3.U5 Photolysis of water generates electrons for use in the light-independent reactions.
8.3.U6 Transfer of excited electrons occurs between carriers in thylakoid membranes.
8.3.U7 Excited electrons from Photosytem II are used to contribute to generate a proton gradient.
8.3.U8 ATP synthase in thylakoids generates ATP using the proton gradient.
8.3.U9 Excited electrons from Photosytem I are used to reduce NADP.
8.3.U10 In the light-independent reaction a carboxylase catalyzes the carboxylation of ribulose-bisphosphate.
8.3.U11 Glycerate 3-phosphate is reduced to triose phosphate using a reduced NADP and ATP.
8.3.U12 Triose phosphate is used to regenerate RuBP and produce carbohydrates.
8.3.U13 Ribulose bisphosphate is reformed using ATP.
8.3.U14 The structure of the chloroplast is adapted to its function in photosynthesis.
8.3.A1 Calvin’s experiment to elucidate the carboxylation of RuBP.
8.3.S1 Annotation of a diagram to indicate the adaptations of a chloroplast to its function.
8.3.NOS Developments in scientific research follow improvements in apparatus- sources of 14C and autoradiography enabled Calvin to elucidate the pathways of carbon fixation.
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