SET IT TO THE SIDE!

1. Pg 775 minPlease pick up a laptop and begin starting it up.We will not be using this until 15 minutes in to class, so once it starts turning on, SET IT TO THE SIDE!

2. Photosynthesis • compare the reactants and products of photosynthesis and cellular respiration in terms of energy and matter;

3. Agenda (10/26-10/29) Objectives: 1) Identify the reactants and products of photosynthesis, 2) Explain how plant cells are adapted to performing photosynthesis, 3) Investigate how Photosynthesis and Cellular Respiration are complimentary processes Warm Up: Study for test Retest Photosynthesis Notes Photosynthesis and Cellular Respiration Demo

4. Once you turn in your test… Make Vocabulary Cards with word on white side (picture for bonus) and definition on the back Use the Textbook to find the Definition to the following words (p.182-189): Diffusion Osmosis Homeostasis Facilitated Diffusion

6. Research into PHOTOSYNTHESIS began centuries ago with this simple question: When a tiny seed grows into a huge plant, where does all the “new plant” come from?

7. ENERGY & LIFE • Autotrophs get energy they need to produce food from the sun (or a light source)

8. Photosynthesis • Definition: The process by which plants take energy from the sun and turn it into carbohydrates (chemical energy. Photosynthesis takes place in the chloroplast.

9. The Big Picture: Presence of light, plants transform CO2 and water into carbohydrates and release oxygen. Equations: (aka: carbs such as glucose, sucrose) Carbondioxide WATER Sugars Oxygen _____________ + ____________ _______________ + ____________ Matter Matter Matter Energy → _____________ + ____________ _______________ + ____________ 6 CO2 6 H2O → C6H12O6 6 O2 _____________ + ____________ _______________ + ____________

10. WAIT A SECOND!!! • What are the reactants of photosynthesis? • What are the products of photosynthesis? • How many of each are there? Equations: (aka: carbs such as glucose) Carbondioxide WATER Sugars Oxygen _____________ + ____________ _______________ + ____________ Matter Matter Matter Energy → _____________ + ____________ _______________ + ____________ 6 CO2 6 H2O → C6H12O6 6 O2 _____________ + ____________ _______________ + ____________

11. Reactants • The molecules and materials found at the beginning of a chemical reaction. The reactants of photosynthesis are carbon dioxide and water.

12. Products • The molecules and materials found at the end of a chemical reaction. They are what is made by a chemical reaction. The products of photosynthesis are carbohydrates (glucose) and Oxygen gas.

13. What’s needed for photosynthesis? In addition to water and carbon dioxide, __________________ and _________________ are needed for photosynthesis to happen. chlorophyll light energy

14. PHOTOSYNTHESIS: Ok, Where does it happen? LIGHT ENERGY 6CO2 + 6H2O SUGAR + 6O2

15. Chloroplast • The organelle in which photosynthesis takes place.

16. What are pigments?light absorbing molecules collect sun’s energy By: VanderWal

17. 2. CHLOROPHYLL Plants are green because of the pigment ______________.(which absorbs light energy) green chlorophyllpigments are greatly reducedrevealing the other pigments.

18. http://www.russianflora.com/store/images/product/custom_green_plant_35.jpghttp://www.russianflora.com/store/images/product/custom_green_plant_35.jpg What is CHLOROPHYLL? main energy absorbing molecule in green plants What are CAROTENOIDS? Pigments. (These look yellow, orange, and brown) http://www.rnzih.org.nz/images/gardenimages/carrots_d.jpg

19. Chloroplast (cont.) • The organelle in which photosynthesis takes place. • It contains the pigment chlorophyll that is responsible for capturing light energy and the green color of plants.

20. Pearson Education Inc, Pusblishing as Pearson Prentice Hall Because light is a form of ___________, any molecule that absorbs light also ___________the energy from the light. ENERGY ABSORBS

21. ENERGY & ELECTRONS http://www.mhhe.com/biosci/pae/botany/uno/graphics/uno01pob/vrl/images/0160.gif When chlorophyll absorbs light, the energy is transferred to electrons in the chlorophyll molecule. What makes photosynthesis work? HIGH ENERGY ____________ ELECTRONS http://www.wjcc.k12.va.us/ROBB/Atom%20Animation%20Resources_files/image003.gif

22. What can be found in chloroplast? Enzymes for PHOTO-SYNTHESIS

23. PHOTOSYNTHESIS OVERVIEW

24. THE BIG PICTURE Excretes PHOTOSYNTHESIS ___________ the _____________ we breathe and the __________ heterotrophs (like us) consume to survive OXYGEN sugars Carbondioxide Sugars WATER Oxygen _____________ + ____________ _______________ + ____________ Matter Matter Matter Energy _____________ + ____________ _______________ + ____________

25. PHOTOSYNTHESIS: Reactants & Products LIGHTENERGY 6CO2 + 6H2O (matter) SUGAR + 6O2 (Matter & Energy)

26. 1. A nuclear membrane surrounds the DNA in which kind of cells? • 2. What is any movement of molecules with the concentration gradient (high to low concentration) without energy? • 3. What is the diffusion of water across a membrane? • 4. If we placed a marine (ocean) fish in a lake, it would die because water would _________its cells. • 5.What kind of solution is the lake water compared to the marine fish cells?