Ø Explain the relationship between mitochondria and chloroplasts in plant cells

Ø explain the relationship between mitochondria and

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Ø Explain the relationship between mitochondria and chloroplasts in plant cells. Unit 5: Topic 3 – Chloroplasts
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Chloroplasts are the most prominent members of the plastid family of organelles Chloroplast Proplastid Chromoplast Amyloplast Etioplast Plastids can differentiate according to the role they perform root
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An etioplast from a dark grown leaf Gravity sensing amyloplast from root tip Chloroplasts are the most prominent members of the plastid family of organelles
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In-class exercise: Can you place all the parts of photosynthesis in the chloroplast? Structural components 1. Outer membrane 2. Inner membrane 3. Thylakoid membrane 4. Thylakoid lumen 5. Stroma 6. Porins 7. DNA 8. Ribosomes 9. TIC/TOC complex for protein import Functional components: A. Electron transport chain B. Calvin cycle C. ATP synthase D. Site of ATP production E. Site of proton gradient F. Relative pH of the compartments 1 F-lowest ~pH5 9-TOC 8 7 6 5 4 3 2 9-TIC E D C B A F-highest ~pH7.5 F- ~pH7
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Energy Transduction Reactions (thylakoid membrane) Carbon Fixation Reactions (stroma)
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Light energy is used to generate protons from water (in PSII) and high energy electrons. electrons travel down an electron transport chain in the thylakoid membrane and create a proton gradient across the thylakoid membrane The proton gradient drives an ATP synthase located in the same membrane to generate ATP . During this process NADP is reduced to
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