1. Warm-Up / EOC Prep 1. Placing wilted lettuce in cold water will make it crisp again. Which statement best describes what happens to restore the lettuce to its original condition? A Water left the lettuce cells by diffusion. B Water entered the cells of the lettuce by osmosis. C Osmosis caused salts to enter the lettuce cells. D Salts in the leaf caused water to leave the cells. 2. Which cell process will move substances against a concentration gradient? A diffusionB facilitated diffusion C osmosisD active transport

2. Agenda  Warm Up  Notes  ATP cycle & photosynthesis diagram  ATP & Photosynthesis WS  Photosynthesis Video & questions  Video Crossword  Make an ATP!  Clean Up  Cool Down

3.  Student of the week is…

4. ATP AND PHOTOSYNTHESIS NOTES Guided Notes

5. ATP  Sunlight is the main energy source for life on Earth  When food is broken down, energy is released as heat and energy is stored as ATP

6. ATP  ATP: the basic energy source  Adenosine triphosphate = (ATP)  Energy is stored in ATP. Cells start with ADP (adenosine diphosphate) and a phosphate is added to produce ATP.  ATP is like a fully charged battery.  ADP + P = ATP

7. ATP  How is energy stored in ATP released? Breaking the bond between the 2 nd and 3 rd phosphates causes energy to be released.  ATP – P = ADP

8. ATP  What does the energy released from the breaking of this bond do?  ATP has enough energy to power a variety of cellular activities such as: 1. Active transport across the cell membrane 2. Protein formation 3. Muscle contraction

9. ATP  Energy flows throughout the living world and is temporarily stored in organisms as ATP  ATP can even be called “energy currency” as energy from ATP powers metabolism

10. Photosynthesis  Many autotrophs (plants and some protists) get their energy for metabolism through photosynthesis Photosynthesis is the process by which light energy is converted to chemical energy.

11. Photosynthesis  Photosynthesis occurs in the chloroplasts and the sunlight required for the reaction is absorbed by the chloroplast pigment chlorophyll.

12. Photosynthesis  Eq: carbon dioxide + water carbohydrates (sugars) + oxygen  Eq: CO 2 + H 2 O  C 6 H 12 O 6 (glucose) +O 2 Light energy

13. Photosynthesis  Photosynthesis releases oxygen gas into the air for us to breath and takes out carbon dioxide

14. Photosynthesis  Photosynthesis can be dependent on temperature. Low temperatures may cause photosynthesis to occur more slowly

15. Photosynthesis  The majority of the weight in trees comes from carbon. Specifically this carbon comes from taking in carbon dioxide during photosynthesis.

16. ATP- Copy down in your notes!  ATP Cycle

17. Photosynthesis

18. Squeeze into your notes…  There are 2 stages to photosynthesis:  1. light reactions (Electron Transport Chain)  2. Calvin Cycle (dark reactions)

19. Photosynthesis

20. Photosynthesis- Copy in your notes!

21. Review  What is the main source of energy on earth?

22.  The sun

23.  ADP + P = _____

24.  ATP

25.  ATP-P = ____

26.  ADP

27.  What gas does photosynthesis produce?

28.  oxygen

29.  Where does the weight of trees come from?

30.  Carbon dioxide (carbon), which is taken in during photosynthesis

31. Cool-Down  1- What is a pigment? What is an example of one?  2- What enters into and leaves the Calvin Cycle?  3- The light dependent reactions occur in which part of the chloroplast?

32. Cool-Down 2  1- How are ATP and ADP different?  2- What are the 3 things that join together to form ATP?  3- What does storing energy look like? What does releasing energy look like?