UNIT 5: PHOTOSYNTHESIS. PHOTOSYNTHETIC ORGANISMS FLOWERING PLANTS AS PHOTOSYNTHESIZERS PROCESS OF PHOTOSYNTHESIS PLANTS AS SOLAR ENERGY CONVERTERS THE ORGANIZATION OF THE THYLAKOID MEMBRANE. PHOTOSYNTHETIC ORGANISMS .
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PHOTOSYNTHETIC ORGANISMSFLOWERING PLANTS AS PHOTOSYNTHESIZERSPROCESS OF PHOTOSYNTHESISPLANTS AS SOLAR ENERGY CONVERTERSTHE ORGANIZATION OF THE THYLAKOID MEMBRANE.
Autotrophsand heterotrophsuse organic molecules produced by photosynthesis as a source of building blocks for growth and repair and as a source of chemical energy for cellular work.
carbon dioxide and
Water is absorbed through the root hairinto the xylem of the roots, into the xylem of the stem, through the xylem of the leaves into the mesophyll cells and finally into the chloroplasts.
1. Light reaction (Dependent of light, occur in thylakoids of chloroplast, Raw materials are: Water and solar energy. End products are: oxygen[released to the atmosphere], NADPH and ATP [used in Calvin Cycle])
2. Calvin Cycle/ Dark Phase (Independent of light, occur in stroma of chloroplast, Raw materials: Carbon dioxide and NADPH and ATP from light phase. End products: Carbohydrates).
- Split water (taken by the roots,
transported through the xylem to
the leaves) – 2H2O O2 + 2H2 –
The oxygen is released into the
atmosphere through the stomata.
Process called: photolysis
- The hydrogen is picked up by a
hydrogen acceptor e.g. NADP to form
- Bond ADP (in Thylakoid) to a phosphate
(in thylakoid) to form ATP (energy containing molecule). Process called: photophosphorylation