1. Announcements Stand up if full group, Ch.10, play? Write researcher for mutant DNA yet? Interview with Prof by 13 th “Verbal finals” begin when? How do I read the online gradesheet?

4. How the grade sheet works

6. Question: Which of the following does not occur during the Calvin cycle? A.carbon fixation B.oxidation of NADPH C.release of oxygen D.regeneration of the CO 2 acceptor E.consumption of ATP

7. Question: Which process is most directly driven by light energy? A.creation of a pH gradient by pumping protons B.carbon fixation in the stroma C.reduction of NADP + molecules D.removal of electrons from chlorophyll molecules E.ATP synthesis

8. Question: How is photosynthesis similar in C 4 plants and CAM plants? A.in both cases, only photosystem I is used. B.both plants make sugar without Calvin cycle. C.in both, rubisco is not used to fix carbon initially. D.both plants make most of their sugar in the dark. E.in both, thylakoids are not involved in PHS.

9. Thin Air... CO2 Where do plants get their ‘food’...

12. Short Experiment: Growing radishes from seed

13. Biology Radish Problem Weighed out 3 batches of radish seeds (each 1.5 g). Experimental treatments: » 1. Seeds not moistened (dry) placed in LIGHT » 2. Seeds on moistened paper towels in LIGHT » 3. Seeds on moistened paper towels in DARK After 1 week, all plant material was dried & weighed. TASK: Predict the (dried) biomass of the plant material in the various treatments.

14. Predict the final (dried) bio-mass [increase/decrease/no change] A.no change – increase – no change B.increase – increase – increase C.increase – decrease – no change D.decrease – increase – decrease E.None of the above are correct

15. Results: Weight of Radish Seedlings 1.46 g 1.63 g 1.20 g How do you explain the results? (Remember all treatments started as 1.5g).

16. Who got the Nobel: For discovering the steps of the Calvin Cycle?

19. 1. First stable product of Calvin Cycle (3-PG)3-Phosphoglycerate *C-C-C-P Question: What size molecule was the radioactive C -14 likely attached to (fixed to)?

20. 1. Fixation Rubisco

21. Phosphoglycero(PG)-kinase Glyceraldehyde-3-phosphate(G3P)-dehydrogenase Ribulose bisphosphate(RuBP)-carboxylase

22. PG kinase G3P dehydrogenase 2. Reduction

26. Biology Theater!