BY 108 Chapter Notes - Chapter 10: Jan Baptist Van Helmont, Jan Ingenhousz, Thylakoid

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9 Oct 2018
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Photosynthesis - occurs in bacteria, algae, stems/leaves of plants. Jan baptista van helmont - showed that soil didn"t add mass to plants; believed that water provided the extra mass. Joseph priestly - found that living vegetation restores oxygen into the air. Jan ingenhousz - found that plants" green leaves (not roots) only restore air in presence of sunlight. Chloroplasts - organelles that carry out photosynthesis thylakoids - internal chloroplast membranes. Mesophyll - thick layer of cells rich in chloroplasts. Stroma - semi-liquid substance that holds enzymes needed to synthesize organic molecules light-dependent reactions - capturing energy from sunlight, using energy to make atp/nadph takes place on thylakoid membrane. Calvin cycle (light-independent reaction) - carbon fixation. Synthesizes organic molecules from co2 in air and energy in. Doesn"t need light to work takes place in stroma. Photosystem - clusters of photosynthetic pigments in thylakoids. Each pigment can capture photons (energy packets) Energy of excited electrons move from chlorophyll molecule to chlorophyll molecule.

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