Photosynthesis: CrashCourse Biology #8

Hank explains the extremely complex series of reactions whereby plants feed themselves on sunlight, carbon dioxide and water, and also create some by products we're pretty fond of as well. Like CrashCourse on Facebook: www.facebook.com Follow CrashCourse on Twitter: www.twitter.com This video uses sounds from Freesound.org, a list of which can be found, along with the CITATIONS for this episode, in the Google document here: dft.ba Table of Contents: 1) Water 1:16 2) Carbon Dioxide 1:32 3) Sunlight/Photons 1:43 4) Chloroplasts 1:57 5) Light Reaction/Light-Dependent 2:42 a. Photosystem II 3:33 b. Cytochrome Complex 5:54 c. ATP Synthase 6:16 d. Photosystem I 7:06 6) Dark Reactions/Light-Independent 7:55 a. Phase 1 - Carbon Fixation 8:50 b. Phase 2 - Reduction 11:31 c. Phase 3 - Regeneration 12:02 tags: photosynthesis, biology, science, crashcourse, plants, light, calvin cycle, respiration, water, carbon dioxide, sunlight, xylem, time lapse, stomata, chlorophyll, photon, plastid, chloroplast, oxygen, thylakoid, grana, lumen, stroma, chemistry, fusion, photoexcitation, photosystem II, electron transport chain, protein, cytochrome complex, carbon fixation, rubisco, phosphoglycolate, reduction, regeneration, glyceraldehyde 3-phosphate, G3P, glucose, cellulose, starch, life
Video Rating: 4 / 5

Paul Andersen explains the major procedures in molecular biology. He starts with a brief description of Taq polymerase extracted from the hot pools of Yellowstone Park. He then uses the analogy of the ransom note to explain each of the processes that are required in genetic engineering. He explains how DNA is cut using restriction enzymes and glued using hydrogen bonds. He explains how gel electrophoresis can be used to sort DNA according to length and how the Polymerase Chain Reaction can be used to copy DNA. He finishes with a brief description of DNA sequencing.