The Chloroplast 

In this video Paul Andersen explains how the chloroplast in plants harnesses power from the Sun to form high energy molecules like glucose. The structure of a chloroplast as well as a brief discussion of the light reaction and Calvin cycle are included.
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Music Attribution
Intro
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: www.freesound.o...
Creative Commons Atribution License
Outro
Title: String Theory
Artist: Herman Jolly
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All of the images are licensed under creative commons and public domain licensing:
Abrget47j. (2013). Eesti: Tamme-Lauri Tamm suvel. Retrieved from commons.wikime...
Clipart - Glowing Light Bulb. (n.d.). Retrieved May 6, 2016, from openclipart.or...
Fasaxc. (2010). English: Photo of a poinsettia leaf, backlit by the Sun. Retrieved from commons.wikime...
Fischer, C. (2014). English: Bloom of cyanobacteria in a freshwater pond. This accumulation in one corner of the pond was caused by wind drift. It looked as if someone had dumped a bucket color into the water. Retrieved from commons.wikime...
Kelvinsong. (2013a). English: Comparison between a chloroplast and a cyanobacterium. Lines aligned to a 690 × 260 px grid, Librsvg bugs begin below about 515 × 195 px. Retrieved from commons.wikime...
Kelvinsong. (2013b). English: New version of File:Chloroplast (standalone version)-en.svg, reworked for æsthetics and scientific accuracy. Editable text in on an invisible layer in the SVG. Retrieved from commons.wikime...
Kelvinsong. (2013c). English: When chloroplasts are exposed to direct sunlight, they stack in columns along the anticlinal cell walls to avoid exposure. In the dark they spread out in sheets along the periclinal walls to maximize light absorption. Retrieved from commons.wikime...