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| How is energy obtained, transformed, and used by living systems? |
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| In this unit students learn on how living things obtain and use energy and how that energy then moves through an ecosystem. This unit focuses on the process of photosynthesis used by many bacteria and nearly all plant cells to capture and store sun energy. The unit also explores the process of cellular respiration, which releases stored energy for use in cellular processes. Students design experiments to determine how different environmental factors affect the rates of photosynthesis and respiration. They investigate food webs, identifying the flow of energy in living systems. Finally, students explore the cycling of nutrients such as carbon and nitrogen, which are critical for the metabolic processes that capture, store, release and use energy. |
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| STANDARD B1: INQUIRY, REFLECTION, AND SOCIAL IMPLICATIONS B1.1 Scientific Inquiry Students will understand the nature of science and demonstrate an ability to practice scientifi c reasoning by applying it to the design, execution, and evaluation of scientific investigations. Students will demonstrate their understanding that scientific knowledge is gathered through various forms of direct and indirect observations and the testing of this information by methods including, but not limited to, experimentation. They will be able to distinguish between types of scientific knowledge (e.g., hypotheses, laws, theories) and become aware of areas of active research in contrast to conclusions that are part of established scientific consensus. They will use their scientific knowledge to assess the costs, risks, and benefits of technological systems as they make personal choices and participate in public policy decisions. These insights will help them analyze the role science plays in society, technology, and potential career opportunities. B1.1C Conduct scientific investigations using appropriate tools and techniques (e.g., selecting an instrument that measures the desired quantity—length, volume, weight, time interval, temperature—with the appropriate level of precision). B2.1 Transformation of Matter and Energy in Cells B2.1A Explain how cells transform energy (ultimately obtained from the sun) from one form to another through the processes of photosynthesis and respiration. Identify the reactants and products in the general reaction of photosynthesis. B2.1B Compare and contrast the transformation of matter and energy during photosynthesis and respiration. B2.5 Living Organism Composition B2.5C Describe how energy is transferred and transformed from the Sun to energy-rich molecules during photosynthesis. B2.5D Describe how individual cells break down energy-rich molecules to provide energy for cell functions. B3.1 Photosynthesis and Respiration B3.1B Illustrate and describe the energy conversions that occur during photosynthesis and respiration. B3.1D Explain how living organisms gain and use mass through the processes of photosynthesis and respiration. B3.2B Describe energy transfer through an ecosystem, accounting for energy lost to the environment as heat. B3.3 Element Recombination B3.3b Describe environmental processes (e.g., the carbon and nitrogen cycles) and their role in processing matter crucial for sustaining life. B3.4 Changes in Ecosystems B3.4A Describe ecosystem stability. Understand that if a disaster such as flood or fire occurs, the damaged ecosystem is likely to recover in stages of succession that eventually result in a system similar to the original one. B3.4C Examine the negative impact of human activities. Copyright © 2001-2015 State of Michigan | |
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| - How do living things obtain and store energy?
- How do living things extract energy from organic compounds?
- What mechanisms allow matter and energy transfer through ecosystems?
- How are energy resources distributed in ecosystems?
- How do increasing human populations impact the energy balance in ecosystems?
| ATP
cellular respiration
energy conservation
energy transfer
energy transformation
photosynthesis |
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| | Analyzing Applying Comparing |
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