1. Cellular Processes Week 1: Photosynthesis vs. Cellular Respiration

2. I Can I can describe the difference between autotrophs and heterotrophs I can describe the events that occur during cellular respiration. I can describe the role that mitochondria play in cellular respiration.

3. Vocabulary Autotrophs Heterotrophs Carbohydrates Glucose Cellular Respiration

4. Cellular Processes Obtaining and Using Energy

5. Characteristic of Living Organisms All living things obtain and use energy

6. How do living organisms obtain energy? Consuming other organisms Absorbing from the soil Absorbing from the sun

7. Autotrophs vs. Heterotrophs An organism that makes its own food. An organism that CANNOT make its own food. Example: Example

8. How does food provide energy? The energy from sunlight is saved in the form of food molecules called carbohydrates (sugars). When we eat food we are taking in this “saved” or “stored” energy.

9. How does food provide energy? When cells need energy, they will “withdraw” it by breaking down the food molecules. Energy

10. Cellular Respiration When cells break down simple food molecules (such as sugars) to release the stored energy they contain.

11. Where in the cell does respiration occur? Near & IN the MITOCHONDRIA

12. Two Stages of Respiration Stage 1 Where? In the cytoplasm What? Sugar molecules are broken down into smaller molecules AND SOME ENERGY is released. Stage 2 Where? In the mitochondria What? The smaller molecules are broken down even more AND MORE ENERGY is released.

13. How Heterotrophs Obtain Energy… Digestive system Bloodstream Cells Mitochondria

14. Cell Respiration 1 Exit Slip 1. What is cellular respiration? 2. Which organelle is involved in cellular respiration? 3. Order the following events a.Kamron’s digestive system breaks down the sandwich molecules to simpler sugar molecules. b.In the cytoplasm the sugar molecules are broken down and some energy is released. c.Kamron eats his sandwich d.The simple sugar molecules travel through the bloodstream to the cell e.In the mitochondria, the molecules are broken down more and MORE energy is released. 4. Are heterotrophs dependent on the sun? Why or why not?

15. Raw Material Product: the “stuff” that you end up with (is produced as a result of the process). Product Raw material: the “stuff” (or materials) you need to start the process.

16. What do we need to start cellular respiration? 1.Sugars (glucose) 2.Oxygen

17. Sugars (glucose) –In science this is represented by C 6 H 12 0 6 C=Carbon H=Hydrogen O=Oxygen –Its basically a “recipe” for glucose. The numbers just tell you how many atoms of each element to “add to the recipe”. Oxygen –In science this is represented by 0 2 –We need 6 molecules of oxygen to start cellular respiration.

18. What do we need to start cellular respiration? C 6 H 12 0 6 + 60 2 GlucoseOxygen “yields”

19. Inside the Mitochondria…. In the mitochondria the broken down molecules of glucose combine with oxygen to produce water and carbon dioxide. Basically the atoms in the raw materials are rearranged to give us new products.

20. What are the products of cellular respiration? 6C0 2 + 6H 2 0 + Energy Carbon Dioxide WaterUsed to power cells.

21. Re-arranging Atoms… During this process atoms are re- arranged not created! There will be the same number of each atom at the beginning of cellular respiration as there are at the end. C 6 H 12 0 6 + 60 2 6C0 2 + 6H 2 0 + Energy Type of AtomTotal Number Carbon6 Hydrogen12 Oxygen18 Type of AtomTotal Number Carbon6 Hydrogen12 Oxygen18

22. I Can… I CAN describe the role of chloroplasts in photosynthesis I CAN describe the process of photosynthesis

23. Vocabulary Photosynthesis Pigments Chlorophyll Stomata

24. Photosynthesis The process by which a cell captures energy in sunlight and uses it to make food.

25. Pigment Colored chemical compounds that absorb light.

26. Chlorophyll The main photosynthetic pigment in chloroplasts (gives plants their green color!)

27. Stomata Small openings in the underside of leaves.

28. What do we need to start photosynthesis? 6H 2 0 + 6C0 2 WaterCarbon Dioxide “yields” Sunlight Energy

29. How do plants obtain CO 2 ? From the air, through its stomata.

30. How do plants obtain water? From the ground, through its roots.

31. What are the products of photosynthesis? C 6 H 12 0 6 + 60 2 Glucose Oxygen

32. What happens to the products? Oxygen is released to the air. The sugars produced are used by the plant cells for energy.

33. How do plants release O 2 ? Through their stomata into the air!

34. Two Stages of Photosynthesis Stage 1: Light Dependent Where? Chloroplasts What? Chloroplasts in plant cells capture energy from sunlight. Stage 2: Light Independent Where? Chloroplasts What? The captured light energy is used to produce sugars and oxygen from water and carbon dioxide

35. Photosynthesis Equation 6C0 2 +6H 2 0 C 6 H 12 0 6 +60 2

36. I Can… Compare and contrast cellular respiration and photosynthesis.

37. Photosynthesis vs. Cellular Respiration A Cycle

38. Opposite Processes You can think of photosynthesis and respiration as opposite processes. Let’s compare their raw materials and their products… Photosynthesis Cellular Respiration Raw Materials CO 2 and H 2 O O 2 and C 6 H 12 O 6 Products O 2 and C 6 H 12 O 6 CO 2 and H 2 O

39. A Cycle Together, photosynthesis and cellular respiration form a cycle that keeps the levels of oxygen and carbon dioxide fairly constant in the Earth’s atmosphere.

40. Comparing and Contrasting As you watch the BrainPOPs, fill in your graphic organizer with key information.