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Saving for a Rainy Day

Interest Grabber. Section 8-1. Saving for a Rainy Day. Suppose you earned extra money by having a part-time job. At first, you might be tempted to spend all of the money, but then you decide to open a bank account. 1. What are the benefits of having a bank account?

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Saving for a Rainy Day

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  1. Interest Grabber Section 8-1 Saving for a Rainy Day • Suppose you earned extra money by having a part-time job. At first, you • might be tempted to spend all of the money, but then you decide to open • a bank account. • 1. What are the benefits of having a bank account? • 2. What do you have to do if you need some of this money? • 3. What might your body do when it has more energy than it needs • to carry out its activities? • 4. What does your body do when it needs energy? Go to Section:

  2. Section Outline Section 8-1 • 8–1 Energy and Life A. Autotrophs and Heterotrophs B. Chemical Energy and ATP 1. ATP and ADP 2. Releasing Energy From ATP 3. Using Biochemical Energy C. ATP and Glucose Go to Section:

  3. ATP Section 8-1 Adenine Ribose 3 Phosphate groups Go to Section:

  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 Go to Section:

  5. 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 Go to Section:

  6. Interest Grabber Section 8-2 Trapping Energy • Have you ever used a solar-powered calculator? No matter where you go, as long as you have a light source, the calculator works. You never have to put batteries in it. Go to Section:

  7. Interest Grabber continued Section 8-2 • 1. A solar-powered calculator uses solar cells that are found in rows along the top of the calculator. Into what kind of energy is the light energy converted so that the calculator works? • 2. Recall that plants use light energy from the sun to make food. Into what kind of energy is the light energy converted by plants? • 3. Most plants, no matter what size or shape they are, have some parts that are green. Which parts of a plant are usually green? • 4. What does the green color have to do with the plant’s ability to convert light energy into the energy found in the food it makes? Go to Section:

  8. Section Outline Section 8-2 • 8–2 Photosynthesis: An Overview A. Investigating Photosynthesis 1. Van Helmont’s Experiment 2. Priestley’s Experiment 3. Jan Ingenhousz B. The Photosynthesis Equation C. Light and Pigments Go to Section:

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

  10. 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 Go to Section:

  11. Interest Grabber Section 8-3 A Look Into the Future • It is 100 years in the future and you are a research scientist. An enormous • volcanic eruption has recently sent huge quantities of dust and ash into the atmosphere. • Working with a partner, make a list of how this event will affect each of the following: • 1. photosynthesis • 2. plant life • 3. animal life • 4. human societies Go to Section:

  12. Section Outline Section 8-3 • 8–3 The Reactions of Photosynthesis A. Inside a Chloroplast B. NADPH C. Light-Dependent Reactions D. The Calvin Cycle E. Factors Affecting Photosynthesis Go to Section:

  13. 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 Go to Section:

  14. 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 Go to Section:

  15. 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 Go to Section:

  16. 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 Go to Section:

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