1. CELLULAR RESPIRATION

2. Quick Review What do cells use energy for?
What is a instant source of energy for cells?
Where in ATP is the energy stored?
How do you get the energy?
How do you “recharge” the energy molecule?
Why is the enzyme ATP synthase important?
Explain why ATP is like a battery.

3. Quick Review What is the equation for photosynthesis?
What organelle contains chlorophyll?
What “goes into” photosynthesis?
What “comes out of” photosynthesis?
What is the ultimate energy source for all life on Earth?
How can the sun’s energy be made usable for life on Earth?

4. CELLULAR RESPIRATION
Two types:
A. ANAEROBIC
B. AEROBIC

5. CELLULAR RESPIRATION Aerobic = needs oxygen
Examples: mammals, trees, bacteria
Anaerobic-does NOT need oxygen
Examples: tetanus, and botulism
Obligate anaerobes = must have no oxygen
Clostridium and methane-producing archaea (ancient bacteria)

6. Tetanus disease occurs as a result of Clostridium bacteria

7. Glucose is broken down for energy - ATP!!!!!
CELLULAR RESPIRATION
Glucose is broken down for energy - ATP!!!!!
What do cells need ATP for?

8. Two different metabolic pathways – begin in cytoplasm:
CELLULAR RESPIRATION
Two different metabolic pathways – begin in cytoplasm:
A. Fermentation (anaerobic)
B. Aerobic cellular respiration
Moves into mitochondria
Mitochondria = energy organelle!!

9. Glucose incompletely broken down
CELLULAR RESPIRATION
A. FERMENTATION
Glucose incompletely broken down
Some energy remains in resulting molecule
2 ATP
2 Types: Alcoholic & Lactic Acid

10. ALCOHOLIC FERMENTATION
CELLULAR RESPIRATION
Anaerobic
ALCOHOLIC FERMENTATION
In yeast - fermentation:
Glucose  carbon dioxide & ethanol
C6H12O6  2CO2 + C2H5OH
and 2 ATP
Yeast cells do alcoholic fermentation

11. ALCOHOLIC FERMENTATION
CELLULAR RESPIRATION
Anaerobic
Wine and beer industry – ferment
carbohydrates in fruits and grains to produce ______________
ALCOHOLIC FERMENTATION

12. ALCOHOLIC FERMENTATION
CELLULAR RESPIRATION
Baking – CO2 causes bread to rise
ALCOHOLIC FERMENTATION
Anaerobic

13. LACTIC ACID FERMENTATION
CELLULAR RESPIRATION
Animals and some microbes produce lactic acid
Yogurt
Cheeses
Sourdough bread
LACTIC ACID FERMENTATION
Anaerobic

14. Animals and some microbes produce lactic acid Muscle fatigue
CELLULAR RESPIRATION
Animals and some microbes produce lactic acid
Muscle fatigue
From lactic acid in muscles

15. B. AEROBIC CELLULAR RESPIRATION
Glucose completely broken down to inorganic molecules
More chemical energy converted to ATP

16. AEROBIC CELLULAR RESPIRATION
Glucose + oxygen  carbon dioxide + water
C6H12O O2  6CO2 + 6H2O
and 36 ATP
Note – oxygen required!!

17. AEROBIC CELLULAR RESPIRATION
Final steps occur in the mitochondria
36 ATP

18. CELLULAR RESPIRATION
Pathway
ATP
Fermentation 2
Aerobic respiration 36

19. Anaerobic Respiration – 2 ATP Aerobic Respiration – 36 ATP
How much energy (ATP) is produced during respiration?
Anaerobic Respiration – 2 ATP
Aerobic Respiration – 36 ATP
Aerobic is more efficient!

20. Glucose  cellular respiration  ATP
C6H12O6 + 6O2  6CO2 + 6H2O
Cellular respiration
is how cells get ATP from glucose!
Glucose  cellular respiration  ATP
GLUCOSE

21. Think …
How does the formula for photosynthesis compare to the formula for cellular respiration ?
PS:
6CO H2O  C6H12O6 + 6O2
CR:
C6H12O6 + 6O2  6CO2 + 6H2O

22. Comparing Photosynthesis and Respiration
Food (glucose) is made
Energy from the Sun stored in Glucose
CO2 taken in
Oxygen given off
Occurs in plants
Respiration
Food (glucose) is broken down
Energy of Glucose Released as ATP
CO2 given off
Oxygen taken in
Occurs in plants and animals

23. Review video: Cellular Respiration
2 minutes

24. Quick Review 1. What molecule is like a battery for the cell?
2. Where in ATP is the energy stored?
3. How do you get the energy?
4. How do you “recharge” ADP?
5. What “goes into” photosynthesis?
What “comes out of” photosynthesis?
6. What organelle is the site of PS?

25. Quick Review
7. What molecule is broken down by cellular respiration to make ATP?
8.Where in the cell does cellular respiration begin?
9. What organism uses fermentation to produce carbon dioxide and alcohol?
10. What is one use of the carbon dioxide that yeasts produce?
11. Is fermentation aerobic or anaerobic?

26. Quick Review
12. Where in the cell does aerobic cellular respiration conclude?
13. How many ATP molecules are produced by fermentation? aerobic cellular respiration?
14. What is the formula for cellular respiration?
15. How does PS compare with CR?
How else?
16. T/F? Plants and animals do CR.

27. Classwork Assignment from the textbook:
A) page 237, Copy the information in Table 9.1
B) page 236, read the Minilab and complete the 4 Analysis questions