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More than you ever wanted to know about Photosynthesis (part 1)

More than you ever wanted to know about Photosynthesis (part 1). Light Dependent Reactions: Photosystem II and Photosystem I. Energy Carrying Molecules. ADP is converted into ATP by adding a phosphate group

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More than you ever wanted to know about Photosynthesis (part 1)

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  1. More than you ever wanted to know about Photosynthesis (part 1) Light Dependent Reactions: Photosystem II and Photosystem I

  2. Energy Carrying Molecules • ADP is converted into ATP by adding a phosphate group • NADP+ is converted into NAPDH by adding two high energy electrons and a hydrogen ion (H+)

  3. Structure of Chloroplasts Grana

  4. Photosystem I • Pigments in photosystem I use light to energize electrons. • Energized electrons are used to convert NADP+ to NADPH which is used to make glucose

  5. Photosystem II • Pigments in photosystem II use light to energize an electron and sent it into an electron transport chain. • Electrons sent to the ETC are replaced by splitting water into two H+ ions, two electrons and one oxygen atom.

  6. Electron Transport Chain • High energy electrons move from photosystem II to photosystem I through an electron transport chain (series of enzymes) • The energy from the electrons is used to pump H+ ions inside the thylakoid membrane.

  7. ATP Synthase • The concentration gradient created by the buildup of H+ ions inside the thylakoid is used to form ATP from ADP as H+ ions pass through an enzyme called ATP synthase.

  8. Light Dependent Reactions

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