Autotrophy: Collecting Energy from the Nonliving Environment Topics Autotrophy & Photosynthesis 1. What are autotrophs? 2. Overview of photosynthesis 3. Light reactions 4. Calvin cycle Photosynthesis & the Environment 1. Rate of photosynthesis 2. Photorespiration and special adaptations 3. Photosynthesis and the atmosphere Chemoautotrophy 1. Varieties of chemoautotrophs 2. Chemoautotrophs in the environment What to Read Chapter 7 pp 103-111 Chapter 7 pp 112-114 Chapter 15 p 307 Chapter 19 p 437 Vocabulary ATP synthetase bundle sheath Calvin cycle CAM plants chemoautotroph chlorophyll chloroplast electromagnetic spectrum grana greenhouse effect light reactions mesophyll NADP/NADPH photorespiration pigment stomata thylakoid wavelength Targets 1 2 3 4 5 6 7 State the importance of photosynthesis. Identify the plant structures that are involved in photosynthesis. Identify the steps by which light energy is converted to chemical energy during the light reactions. Discuss the importance of the Calvin cycle. Describe how environmental factors affect the rate of photosynthesis and photorespiration. Describe the effects of photosynthesis on the atmosphere. Discuss the varieties of chemoautotrophs and their distribution in the environment. 1 Blue (KC126) 2 3 4 Blue (RI126) Blue (RI127) Blue (UC127) Questions to Consider Create a concept map using the following words: C3, C4, Calvin cycle, chemical energy, chemoautotrophs, chloroplasts, light energy, light reactions, photorespiration, stroma, thylakoid. Start with the word PHOTOSYNTHESIS and branch from there. Add as many other concepts from the chapter as you can. Be sure to include appropriate linking words for all concepts. In what ways is photosynthesis important to humans? Compare photosynthesis in C3 and C4 plants. Atmospheric levels of carbon dioxide have increased from 300 parts per million (ppm) to almost 360 ppm in recent years. (1) What has caused the increase in carbon dioxide levels over time? (2) What will be the effect of this increase on photosynthesis and growth in C3 and C4 plants?
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