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ATP

ATP. Adenosine triphosphate- the principal chemical compound that cells use to store and release energy. Consists of adenine, Ribose, and three phosphate groups. ADP - adenosine diphosphate, it looks like ATP but has two phosphates instead of three.

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ATP

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  1. ATP Adenosine triphosphate- the principal chemical compound that cells use to store and release energy. Consists of adenine, Ribose, and three phosphate groups. ADP- adenosine diphosphate, it looks like ATP but has two phosphates instead of three. When a cell has energy available it stores the energy by adding a phosphate to ADP.

  2. ATP Section 8-1 Adenine Ribose 3 Phosphate groups

  3. 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

  4. 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

  5. Cellular Respiration Cellular Respiration- the process that releases energy by breaking down glucose and other food molecules in the presence of oxygen. C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (as ATP) Glucose + Oxygen → Carbon dioxide + Water + Energy (as ATP)

  6. Section 9-1 Chemical Pathways Glucose Krebs cycle Electrontransport Glycolysis Alcohol or lactic acid Fermentation (without oxygen)

  7. Section 9-1 Figure 9–2 Cellular Respiration: An Overview Mitochondrion Electrons carried in NADH Electrons carried in NADH and FADH2 Pyruvic acid Glucose Electron Transport Chain Krebs Cycle Glycolysis Mitochondrion Cytoplasm

  8. Smooth endoplasmic reticulum Vacuole Ribosome (free) Chloroplast Ribosome (attached) Cell Membrane Nuclear envelope Cell wall Nucleolus Golgi apparatus Nucleus Mitochondrion Rough endoplasmic reticulum Figure 7-5 Plant and Animal Cells Section 7-2 Plant Cell

  9. Glycolysis Glycolysis is the process in which one molecule of glucose is broken in half, producing two molecules of pyruvic acid, a 3-carbon compound. NADH holds electrons to be transferred to other molecules. By doing this it helps to pass energy from glucose to other pathways in the cell.

  10. Section 9-1 Figure 9–3 Glycolysis Glucose 2 Pyruvic acid To the electron transport chain

  11. Anaerobic Respiration Fermentation-releases energy from food molecules by producing ATP without oxygen present. Alcoholic Fermentation- Yeasts and microorganisms form ethyl alcohol and carbon dioxide as waste. Lactic Acid Fermentation- pyruvic acid accumulates as a result of glycolysis can be converted to lactic acid.. It Regenerates NAD so that glycolysis can continue

  12. Section 9-1 Figure 9–4 Lactic Acid Fermentation Lactic acid Glucose Pyruvic acid

  13. Section 9-2 Flowchart Cellular Respiration Glucose(C6H1206) + Oxygen(02) Glycolysis KrebsCycle ElectronTransportChain Carbon Dioxide (CO2) + Water (H2O)

  14. Aerobic Respiration Uses Oxygen and takes place in the mitochondria Krebs Cycle- 2nd stage of cellular respiration that break pyruvic acid down into carbon dioxide in a series of energy extracting reactions. The 1st compound formed is citric acid so Krebs cycle is also known as the citric acid cycle. Electron Transport Chain- also takes place in the mitochondria . It uses the high energy electrons from the Krebs Cycle to convert ADP into ATP.

  15. Section 9-2 Figure 9–6 The Krebs Cycle Citric Acid Production Mitochondrion

  16. Section 9-2 Figure 9–7 Electron Transport Chain Electron Transport Hydrogen Ion Movement Channel Mitochondrion Intermembrane Space ATP synthase Inner Membrane Matrix ATP Production

  17. The Totals Krebs cycle and Electron Transport chain enable the cell to produce 34 more ATP molecules per glucose molecule. 18 times as much ATP can be generated from glucose in the presence of oxygen. So total amount is 36 ATP’s

  18. Heterotroph or Autotroph Autotrophs- organisms such as plants that make their own food. Heterotroph- organisms like animals obtain energy food that they consume.

  19. Photosynthesis Photosynthesis uses the energy of sunlight to convert water and carbon dioxide into high energy sugars and oxygen. 6H2O + 6CO2 C6H12O6+ 6O2

  20. Light and Pigments Pigments- light absorbing molecules that plants use to gather the sun’s energy. Chlorophyll- the plants principal pigment. Two Types. Chlorophyll –a and Chlorophyll-b. Carotene- red and orange pigments that some plants contain.

  21. 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

  22. Chloroplast Photosynthesis takes place in the chloroplast Thylakoids-saclike photosynthetic membrane. Thylakoids are arranged in stacks known as grana(plural) or granum(singular). Proteins in the thylakoid membrane organize chlorophyll and other pigments into clusters known as photosystems. Photosystems- light collecting units of the chloroplast 2 types

  23. Photosynthesis: Reactants and Products Section 8-2 Light Energy Chloroplast CO2 + H2O Sugars + O2

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

  25. Light dependent reactions Light dependent reactions take place in the thylakoid membranes Light dependent reactions require energy from light to produce oxygen gas and convert ADP and NADP into the energy carriers ATP and NADPH. ATP Synthase- enzyme or protein that binds ADP and a phosphate group together to produce ATP.

  26. Figure 8-10 Light-Dependent Reactions Section 8-3 Hydrogen Ion Movement Chloroplast Photosystem II ATP synthase Inner Thylakoid Space Thylakoid Membrane Stroma Electron Transport Chain Photosystem I ATP Formation

  27. Light independent reactions or The Calvin Cycle Takes place in the stroma. The Calvin Cycle uses ATP and NADPH from the light-dependent reactions and 6 molecules of carbon dioxide to produce a single 6 carbon sugar molecule. Plants use the glucose to make a polysaccharide called cellulose.

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

  29. Light- dependent reactions Calvin cycle Energy from sunlight Thylakoid membranes ATP Stroma NADPH High-energy sugars ATP NADPH O2 Chloroplasts Concept Map Section 8-3 Photosynthesis includes takes place in uses use take place in to produce to produce of

  30. Videos Video Contents • Click a hyperlink to choose a video. • ATP Formation • Photosynthesis • Light-Dependent Reactions, Part 1 • Light-Dependent Reactions, Part 2 • Calvin Cycle

  31. Video 1 Video 1 ATP Formation • Click the image to play the video segment.

  32. Video 2 Video 2 Photosynthesis • Click the image to play the video segment.

  33. Video 3 Video 3 Light-Dependent Reactions, Part 1 • Click the image to play the video segment.

  34. Video 4 Video 4 Light-Dependent Reactions, Part 2 • Click the image to play the video segment.

  35. Video 5 Video 5 Calvin Cycle • Click the image to play the video segment.

  36. Go Online Internet • ATP activity • Interactive test • For links on Calvin cycle, go to www.SciLinks.org and enter the Web Code as follows: cbn-3082. • For links on photosynthesis, go to www.SciLinks.org and enter the Web Code as follows: cbn-3083.

  37. End of Custom Shows • This slide is intentionally blank.

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