Chapter 10 Notes - Chapter 10 Photosynthesis Facts...

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Chapter 10 Photosynthesis Facts Autotrophs- are self feeders; sustain themselves without eating anything derived from other living organisms. Producer Photoautotrophs- organisms that use light as a source of energy to synthesize organic substances. Heterotroghs- obtain their organic material by eating other organism. Consumer. Photosynthesis Harness light energy and use it to drive the synthesis of organic compounds emerges from structural organization in the cell o Originated from bacteria All green parts on a plant have chloroplast, but the leaves are the major site of photosynthesis Chlorophyll- the green pigment located within chloroplast o Drive the synthesis of organic molecules in the chloroplast Mesophyll- the tissue in the interior of the leaf Stomata- where CO2 enters and O leaves the plant o Water is absorbed in the roots Stroma- the dense fluid within the chloroplast Thylakoids- the interconnected membranous sac, segregates the stroma from another compartment Gana- a stack of thylakoids Formula o 6CO2 + 12H2O + light energy= C6H12O6 + 6O2 + 6H2O o Look in teachers notes The chloroplast splits water into hydrogen and oxygen o O2 is a waste product and is released from the stomata Redox process o Photosynthesis reverses the direction of electron flow Water is split and electrons are transferred along with hydrogen ions from the water to the carbon dioxide, to reduce the sugar o Energy boost is provided by light Two stages of photosynthesis o Light reaction Convert solar energy to chemical energy Water is split, source of electrons Light absorbed by chlorophyll droves a transfer of the electrons and hydrogen ion from water to acceptor called NADP+ Light reactions also generate ATP
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Using chemiosomosis to power the addition of a phosphate group to ADP called photophosphorylation Produce no sugar o Calvin cycle Carbon fixation- the incorporating CO2 from the air into organic molecules already present in the chloroplast.
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