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Unformatted text preview: Photosynthesis 10:59 Photosynthesis: The conversion process of light energy to chemical energy as sugar and other organic molecules 10.1: Photosynthesis converts light energy to the chemical energy of food • Chloroplasts: The Sites of Photosynthesis in Plants o Leaf = major site of chloroplasts (.5 million/mm 2 ) o Chlorophyll: the green pigment located within chloroplasts Absorbs light energy o Mesophyll: the tissue in the interior of the leaf (where chloroplasts are found mainly in) Each cell has 30-40 chloroplasts o Stomata: the entrance/exit microscopic pores for atmospheric gases o Chloroplasts Each organelle measuring about 2-4 μ m by 4-7 μ m 2 membranes encloses stroma: the dense fluid within the chloroplast Thylakoids: an elaborate system of interconnected membranous sacs that segregate the stroma from another compartment, the interior of the thylakoids, or the thylakoid space In stacked columns (called grana ) Chloroplasts in thylakoid membranes • Tracking Atoms Through Photosynthesis: Scientific Inquiry o 6 CO 2 + 12 H 2 O + Light energy C 6 H 12 O 6 + 6 O 2 + 6 H 2 O ÷ 6 (- product 6 H 2 O) CO 2 + H 2 O [CH 2 O] + O 2 The Splitting of Water O 2 from H 2 O Sulfur bacteria consume H 2 S and release sulfur General: CO 2 + 2 H 2 X [CH...
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