Understanding Key Concepts

5. Distinguish between autotrophs and heterotrophs.

6. Identify the primary source of energy for humans.

7. Relate the types of pigments involved in photosynthesis and their roles.

8. Compare the different roles of photosystem I and photosystem II in photosynthesis.

9. Describe what happens to the extra energy in excited electrons as they pass along an electron transport chain in a chloroplast.

10. Explain how oxygen is generated in photosynthesis.

11. Summarize the events of chemiosmosis.

12. State the three major steps of the Calvin cycle.

13. Explain what happens to the 3-carbon compounds that do not leave the Calvin cycle to be made into organic compounds.

14. Propose what might happen to photosynthesis if ATP were not produced in the light reactions.

15. Relate the rate of photosynthesis to carbon dioxide levels.

16. Unit 2-Photosynthesis

¿m*^ Many plants have stomata that BMLOGV « take in C02 at night and release it tr«*" during the day. Write a report about these types of plants, and summarize why this adaptation is an advantage for plants living in a hot, dry climate.

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CONCEPT MAPPING Create a concept map that shows the steps of photosynthesis. Include the following terms in your concept map: light reactions, Calvin cycle, photosystem I, photosystem II, carbon fixation, accessory pigment, chlorophyll, electron transport chain, ATP synthase, chemiosmosis, and photosynthesis.

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