1. Objective: You will be able to compare and contrast the photosynthesis and respiration equations. Do Now: Read p. 221 What is the most important use of food?

2. Photosynthesis Equation 6CO 2 + 6H 2 OC 6 H 12 O 6 + 6O 2 Respiration Equation C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O

3. Comparison Compare the equations for photosynthesis and respiration How can you remember the equation for photosynthesis? How can you remember the equation for respiration?

4. Global Warming Is partly caused by an increase of CO 2 in the air? Why would cutting down a forest and leaving the trees to rot increase the effect of global warming?

5. Create your own lab day!

6. Bromthymol Used to test for the presence of carbon dioxide (CO 2 ) If CO 2 is present it is a yellow color If CO 2 is NOT present it is a blue color

8. How does exercise affect the disposal of CO 2 ? What is the independent variable? What is the dependent variable? Design your experiment –Write a hypothesis –How would you test for CO 2 ? –List the procedure –List the materials you will need

9. ATP  Contain three phosphate groups  Have energy between phosphate bonds  ATP supplies energy by breaking the bonds between phosphates  Energy is used to carry out chemical reactions  The bonds are restored by respiration

10. Figure 6.10 The ATP cycle

11. The Structure of ATP ATP (adenosine triphosphate) –Is the cell’s energy –Provides energy for cellular functions Figure 8.8 O O O O CH 2 H OH H N HH O N C HC N C C N NH 2 Adenine Ribose Phosphate groups O O O O O O - --- CH

12. Review Respiration Equation C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + 36ATP Breaking down glucose with oxygen allows us to make 36 ATP

13. Anaerobic respiration Occurs without oxygen Only makes 2 ATP Also called fermentation

14. Anaerobic respiration in humans When we can’t get enough oxygen to our muscles, they become fatigued. We then have to do respiration without using oxygen C 6 H 12 O 6 Lactic acid + 2ATP

15. Anaerobic respiration in yeast Produces alcohol and CO 2 C 6 H 12 O 6 Alcohol + CO 2 +2 ATP