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Beechdrops ( Epifagus virginiana ) are leafless plants that lack chlorophyll. Beechdrops get

Beechdrops ( Epifagus virginiana ) are leafless plants that lack chlorophyll. Beechdrops get their nourishment from the roots of beech trees, which reduces the amount of nutrients available to the trees themselves. This interaction is best described as — A. predatory B. parasitic

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Beechdrops ( Epifagus virginiana ) are leafless plants that lack chlorophyll. Beechdrops get

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  1. Beechdrops (Epifagus virginiana) are leafless plants that lack chlorophyll. Beechdrops get their nourishment from the roots of beech trees, which reduces the amount of nutrients available to the trees themselves. This interaction is best described as — A. predatory B. parasitic C. commensalistic D. mutualistic CPS

  2. According to this food web, which of these is an omnivore? A. Caterpillar B. Mouse C. Ant D. Fly larva CPS

  3. Which molecule provides most of the energy used to drive chemical reactions in cells? A. DNA B. RNA C. ATP D.ADP CPS

  4. PHOTOSYNTHESIS To create Light Purpose: Plants use light to create sugars

  5. What is photosynthesis? • The process in which plants convert light energy into chemical energy (food glucose). • Happens in the chloroplast

  6. Photosynthesis Equation • PHOTOSYNTHESIS EQUATION: It will be on every quiz and your unit test! Carbon dioxide + water + E → glucose + oxygen 6CO2 + 6H2O + E → C6H12O6 + 6O2 (reactants)(products) light enzymes takesin produces Light Enzymes

  7. Thylakiod: sac like membranes Stroma: space between thylakiods Grana: stack of thylakiods Chloroplast

  8. Within the chloroplast pictured above are disc like structures arranged in stacks called grana. The stack like membranes contains pigments that absorb light energy. The individual disc-like shaped structures labeled A are called ____. A. chlorophyll B. thylakoids C. stroma D. Golgi apparatus CPS A B

  9. Which word summary word equation best describes a process that directly requires light energy? A. water + carbon dioxide  glucose + oxygen B. glucose + glucose  maltose + water C. glucose  alcohol + carbon dioxide + ATP D. water + glucose  oxygen + carbon dioxide  ATP CPS

  10. Vein

  11. Water enters the plant through the roots and travels up to the leaf through the veins. Water then travels to each cell through a process known as OSMOSIS.

  12. Stomata Stomata are the little “holes” on a plant leaf that regulates the gas exchange in plants.

  13. Carbon dioxide enters the leaf through the stomata. Carbon dioxide then travels to each cell through a process known as Diffusion.

  14. Which structure regulates gas exchange during the processes of photosynthesis and respiration? CPS A. Q B. R C. S D. T

  15. Products and Reactants in Photosynthesis • Reactants- Carbon Dioxide and Water • Products- Glucose and Oxygen • There is NO ATP gain during photosynthesis! • *****Remember the ATP Cycle*****

  16. Light and Pigments • Photosynthesis depends onpigments -proteins that absorb some light and reflect others. • Examples: chlorophyll and carotene

  17. Light and Pigments • Chlorophyll absorbs blue, violet, and red light, but reflects green light. • This is why plants are green. • Carotene reflects orange light.

  18. Figure 8-7 Photosynthesis: An Overview Photosynthesis overview: Section 8-3 (REACTANTS) H2O CO2 LIGHT Light- Dependent Reactions Calvin Cycle Sugars(glucose) O2 (PRODUCTS)

  19. The 2 Steps to Photosynthesis • 1. Light-dependent reactions • 2. Calvin Cycle (AKA: Light-independent reactions)

  20. Step 1:Light-Dependent Reactions *requires light* Purpose: To make oxygen used by other organisms Location: Thylakoid membranes

  21. Step 1: LDR

  22. Step 1: LDR How it works: • H2O is broken up by light into H+ and O2. • O2 is released through stomata

  23. Step 2: The Calvin Cycle (Light-Independent Reactions) * does not need light* Purpose: To make glucose from CO2 Location:STROMA

  24. Step 2: Calvin cycle

  25. Calvin Cycle How it works: • 6 CO2 enter the cycle and are converted into glucose. • With TWO turns of Calvin Cycle, you make ONE glucose.

  26. What are the two steps of Photosynthesis listed in the correct order? • A. Glycolysis & Krebs cycle • B. Calvin cycle & L.D.R. • C. L.D.R. & Kreb’s cycle • D. L.D.R & Calvin cycle CPS

  27. Which compound is a product of photosynthesis and a reactant for cellular respiration? A. carbon dioxide B. water C. glucose D. energy CPS

  28. Why are photosynthesis and cellular respiration often considered opposites? A. Photosynthesis produces twice as many ATP molecules as cellular respiration does. B. Water is released during photosynthesis and consumed during cellular respiration. C. Photosynthesis occurs during the day, and cellular respiration occurs at night. D. Oxygen is produced during photosynthesis and used during cellular respiration CPS

  29. BIG PICTURE • Plants release oxygen • Animals bring in oxygen • Plants create glucose • Animals eat glucose • Animals breathe out water • Plants bring in water

  30. Oxygen Glucose Carbon Dioxide water BIG PICTURE • Plants and animals work together to create the carbon cycle:

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