10.5.05 - October 5 2005 photosynthesis 6CO2 6H20 C6H12O6...

Info icon This preview shows pages 1–2. Sign up to view the full content.

October 5, 2005 photosynthesis 6CO2 + 6H20 C6H12O6 + 6O2 Irreversible Summary of Reactions Green plants make oxygen Green plants require sunlight Green plants make “fixed air” Green plants require water 19 th century explaination: light splits CO2, releasing O2 – WRONG! PURPLE SULFUR BACTERIA: CO2 + 2H2S (CH2O)n + H20 + 2S CO2 + H2O (CH2O)N + O2 Realized that these equations were similar, so water must give rise to oxygen Tests o Light Reactions: Oxygen-18 (normal 16) – resulting in splitting of water, requiring light o Dark Reactions: C14 Studies – fixation of carbon, produced even in the dark. o Must be two reactions! Photosynthesis in Evolution Cyanobacteria photosystem II. 2.7 BYA 2.4-2.2 BYA, atmosphere contained oxygen. Aerobic respiratioc Light Reactions Eneregy from sunlight used to genetate ATP, NADPH. Water is oxidized, releasing O2 Which wavelengths drive photosynthesis? – o Chlorophyll a&b – 680-700nm (red), o Also around 400 (violet) Action Spetrum o Obsorbtion around red & violet.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern