study guide exam two

study guide exam two - Study Guide Exam 2 Spring 2009...

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Study Guide, Exam 2 Spring 2009 Lecture 7 (Chapter 10) Photosynthesis What is an autotroph and what is a heterotroph? Are plants the only autotrophs? What else? What two classes of metabolic chemical reactions balance the CO 2 budget of the biosphere? What does CH 2 O mean, as it is used in the lecture and book? Photosynthesis in plants produces O 2 . What is O 2 ? Where does the oxygen come from? What are the light reactions? Where are they? What do they use as input? What do they produce? What are the dark reactions? Where are they? What do they use as input? What do they produce? What is light? What is a pigment? How does a pigment change when it absorbs a photon of light? What colors (wavelengths) of light do chlorophyll molecules absorb? Why are leaves green? What is an excited state of a molecule? What are the various fates of excited state electrons? What is the “antenna system” in the thylakoid membrane? How does it work? Understand Figures 10.13, 10.14, 10.15 and 10.17 (light reactions) What is the immediate source of the energy used for ATP synthesis in chloroplasts? What creates that source of energy? What is the ultimate source of energy? Electrons are donated to NADP+ to produce NADPH, where do they come from? After electrons are removed from photosystem I, How are they replaced? After electrons are removed from photosystem II, How are they replaced? Be able to trace the movement of electrons from water to NADPH What is the Calvin cycle? What does it do? What does it produce? What energy input allows it to proceed? In the Calvin cycle, what is the fate of the 6 molecules of G3P (glyceraldehyde-3- phosphate) In the Calvin cycle, what is the fate of ribulose-bisphosphate? How is CO 2 incorporated into a larger molecular structure? Be able to trace the conservation of carbon atoms in the Calvin cycle What is the main problem that leaves face on hot sunny days? How do C4 and CAM plants differ from C3 plants? Do plants respire? Where in plant cells is ATP synthesized at night? Lecture 8 (Chapter 16) The molecular basis of inheritance
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This note was uploaded on 09/19/2011 for the course BIO 212 taught by Professor Mayfield during the Spring '10 term at Iowa State.

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study guide exam two - Study Guide Exam 2 Spring 2009...

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