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Can plants think? Do plants have a social life?

Can plants think? Do plants have a social life?. PHOTOSYNTHESIS:. The starting point of life*. 1 st concept to know: Living things run on batteries. What is the battery?. We recharge ATP from sugar (glucose) …where does sugar come from?. Adenosine Triphosphate (ATP).

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Can plants think? Do plants have a social life?

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  1. Can plants think?Do plants have a social life?

  2. PHOTOSYNTHESIS: The starting point of life*

  3. 1st concept to know: Living things run on batteries. What is the battery?

  4. We recharge ATP from sugar (glucose) …where does sugar come from?

  5. Adenosine Triphosphate (ATP) Molecule that provides life’s energy. • Works by popping of a phosphate group, releasing stored energy • 3 parts: Adenine Ribose 3 Phosphate groups

  6. Figure 8-3 Comparison of ADP and ATP to a Battery Section 8-1 ADP ATP Energy Energy Adenosine diphosphate (ADP) + Phosphate Adenosine triphosphate (ATP) Partially charged battery Fully charged battery

  7. An organism can either make its own food, or eat it. They are called autotrophs or heterotrophs

  8. Nutrition

  9. PHOTOSYNTHESIS: process which light energy is converted into sugar energy PBS interactive

  10. Major Players in the Development of the Photosynthesis Equation…how did they each contribute? What where their results? Conclusions? • Van Helmont: what ingredient makes up plants? • Priestly: What are plant byproducts? • Ingenhousz: Is light really that important?

  11. Conclusion of scientists:

  12. Leaf Cross section

  13. Plants: Leaf Cross Section

  14. Stomates and Guard cells

  15. Plants review: • Vascular Tissue: • Xylem, transports water • Phloem, transports food • Gas intake: • Guard cells open forming STOMATES • Lenticels in bark

  16. Figure 8-5 Chlorophyll Light Absorption Section 8-2 Absorption of Light by Chlorophyll a and Chlorophyll b Chlorophyll b Chlorophyll a V B G Y O R

  17. Wavelengths effects on Photosynthesis http://seawifs.gsfc.nasa.gov/SEAWIFS.html

  18. Chlorophyll b Chlorophyll a Absorption Intensity 400 500 600 700 300 Chlorophyll, a green pigment, allows plants to absorb light energy. Energy absorption, however, must be consistent with allowable (basal to excited state) electron transitions within the chlorophyll molecule (click 1). Because these transitions are not continuous, a plant obtains energy only at certain frequencies of light. Energy insufficient to reach an excited state is not absorbed (click 1). Similarly, energy that drives an electron past one energy level but is insufficient to reach a second is not absorbed (click 1). To be absorbed, the energy must be sufficient to reach only allowable energy states (click 1). This simple rule of quantum physics is all you need to know to understand an absorption spectra of chlorophyll (click 1). 2 excited states 1 ground state

  19. Chl oroplast Anatomy

  20. water CO2 Sugars O2 Figure 8-7 Photosynthesis: An Overview Section 8-3 Chloroplast Chloroplast NADP+ ADP + P Light- Dependent Reactions Calvin Cycle ATP NADPH

  21. Photosynthesis + H2O CO2 Energy ATP and NADPH2 Which splits water Light is Adsorbed By Chlorophyll Calvin Cycle ADP NADP Chloroplast Used Energy and is recycled. O2 + C6H12O6 Light Reaction Dark Reaction

  22. Resources: Photosynthesis animation, VCAC Photosynthesis video, Mastering Biology Light-Dependent Reactions Hydrogen Ion Movement Chloroplast Photosystem II ATP synthase Inner Thylakoid Space Thylakoid Membrane Stroma Electron Transport Chain Photosystem I ATP Formation

  23. Figure 8-11 Calvin Cycle Section 8-3 CO2 Enters the Cycle Energy Input ChloropIast 5-Carbon Molecules Regenerated 6-Carbon Sugar Produced Sugars and other compounds

  24. Comparison of Mitochondria and Chloroplasts Both have a large amount of internal membrane surface area. Both have their own ribosomes. Both have their own genomes. Both produce a large amount of ATP. Both derive energy for ATP synthesis from H+ pumps.

  25. The mitochondrial genome (in humans) is about 16,000 nucleotides long. The chloroplast genome is about 10x the size of the mitochondrial genome.

  26. Quick Quiz What is the ultimate purpose of photosynthesis? Where does the Calvin Cycle occur? What is the purpose of water? What is the purpose of light? What is the primary raw ingredient of sugar? Where do the Light-Dependent Reactions occur? What makes the turbine spin that makes ATP? What is the waste product of the Light-Dependent Reactions? Why are plants green?

  27. Test yourself Section 8-3 includes takes place in uses use take place in to produce to produce of

  28. Light- dependent reactions energy from sunlight thylakoids ATP NADPH O2 Chloroplasts Do Now Section 8-3 Photosynthesis includes Calvin cycle takes place in uses use take place in stroma ATP NADPH to produce to produce of High-energy sugars

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