Lab 1 Answers - LAB 1 PLANT BIOLOGY Answers to Questions in...

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LAB 1 – PLANT BIOLOGY Answers to Questions in Lab Manual 1. Reduce use of fossil fuels, reduce solid waste 2. Use less tropical woods that destroy rain forests; plant trees 3. O 2 production, production of photosynthate (G-3-P, glucose, starch) Hypothesis : CO 2 fixation is tightly coupled to photophosphorylation Prediction : CO 2 uptake will stop when light is turned off 4. Increase in pH, more basic. CO 2 is being removed, so H + concentration is decreasing 5. CO 2 fixation 6. Reversed foil: Tube 2: blue turns green as CO 2 is added by respiration in the dark Tube 3: green turns blue as CO 2 removed by photosynthesis in the light 7. 7x usually smaller; 15x usually larger; 30x usually larger 8. possibly 9. usually no 10. (sketch during lab) 11. ~ 50µm 12. Example: for 7 cells when field diameter is 350µm: 350µm ÷ 7 cells = 50 m m per cell 13. yes 14. yes-chlorophyll is not free as in a prokaryote 15. motility 16. No - nonphotosynthetic cells (heterocysts) are specialized to fix N2 17. strings 18. ~ 1.5 BYA 19. Anabaena 20. photosynthesis 21.
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