Photosynthesis Terms

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Photosynthesis is a very important and complex biochemical pathway in which energy from the sun combined with carbon dioxide and water is ultimately converted in to sugars and oxygen which then is released in to the atmosphere from the plant cell. Find out about photosynthesis terms with help from an experienced chemistry professional in this free video clip.

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Hi, I'm Dan Weisenberger and this is photosynthesis terms. Photosynthesis is a very important and complex biochemical pathway in which energy from the sun combined with carbon dioxide and water is ultimately converted in to sugars and oxygen which then is released in to the atmosphere from the plant cell. Now I have outlined here a diagram of the plant cell and have indicated the major things that are involved in photosynthesis. So let's start with this is the plant cell in the green circle. We have an outer membrane and an inner membrane which are only separated by 15 nanometers of distance. And we have stoma which are small pores which allow gases to come in and out of the plant cell. Now inside the membrane is the stroma and that's a liquid filled sac that contains water and other types of organic compounds. The chloroplast is a small organelle shown here which is the location of photosynthesis. Specifically, chlorophyll is a green pigment shown here by these small dots that absorb light and begins the conversion of light energy in to chemical energy. The thylacoid membrane are small membrane type sacs that contain the chlorophyll where photosynthesis occurs. And once chlorophyll has absorbed a photon of light water is split in to oxygen electrons and protons and those electrons in to oxygen, electrons and protons and those electrons are fed in to an electron transport chain which ultimately generate ATP from ADP and cause the conversion of NADPH to NADP plus these two are both cofactors for these pathways. Now the second step involves carbon dioxide entering the cell and reacting with one five of this phosphate carbonate the ribisco enzyme which will initiate the Calvin cycle and eventually generate three phosphoglycerate which is then used in further steps of conversion of those molecules to sugars other types of sugars for energy of the cell. I'm Dan Weisenberger and this is photosynthesis terms.

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