1. Cellular Respiration: (with oxygen) -Electron Transport

2. Cellular Respiration: Goal—break down energy stored in carbon bonds!
releasing
mitochondrion
_______ the energy stored in carbon bonds
With Oxygen: This takes place in the _____________
Mitochondrion: The site of Respiration in all cells

3. Last Step: Electron Transport Chain— Where oxygen comes to play!
Inner mitochondrial membrane
Enzymes for ELECTRON TRANSPORT CHAIN are located in the: ____________________________

4. Takes place on mitochondrial membrane (inner membrane)
ETC uses high energy electrons from Krebs Cycle to
convert ADP into ATP

5. Electron Transport Chain Movie:
Use the graphic organizer to start making notes about the Electron Transport Chain

6. Electron Transport Chain Movie:
Use the graphic organizer to start making notes about the Electron Transport Chain

7. Details about Electron Transport Chain:
Electrons, Kreb Cycle, Glycolysis
Protons (H+ ions)
Oxygen
Water
Inter membrane space
High energy ____________ from _________ and ___________ are passed along the electron transport chain.
Energy from the passing electron is used to transport __________________ across the membrane building up concentration gradient!!!
At the end of the chain, an enzyme combines the electrons with the hydrogen ions and oxygen to form __________.
The pumping of H+ ions into ___________________ results in the potential energy that will be used!

8. The Final Step: ATP Synthase
Higher concentration of _______ at the inter membrane space compared to the matrix  Build-up of Potential Energy (PE)
As H+ rushes through a membrane enzyme, ______________. The kinetic energy from the H+ ion _______ the ATP Synthase, converting __________ to _________.
H+, H+
ATP Synthase
Spins
ADP to ATP

9. The payoff ($$) : LOTS of ATP molecules formed in this final step!
Used up: oxygen is used as _______ __________to form water. 22
Electron acceptor

10. Cellular Respiration: (with oxygen) -Krebs Cycle

11. The Krebs cycle: steps in respiration
Input: pyruvic acid from ____________.
Output:
Multiple reactions that strip carbon atoms and form _______ _________(released into the atmosphere)
ATP and other high energy molecules are generated
glycolysis
Carbon dioxide
Note: NADH and FADH2 (electron carriers) will be shuttled to ETC

12. Image from BIOLOGY Miller and Levine; Prentice Hall Publishing
Areobic Respiration
_______________ follows glycolysis if oxygen is present

13. Krebs Cycle Movie Clips:
Use the graphic organizer to start making notes about the Krebs Cycle.

14. Krebs Cycle Movie Clips:
Use the graphic organizer to start making notes about the Krebs Cycle.

15. outside the mitochondria. Krebs cycle happens in
REMEMBER:
Glycolysis happens in
the ________________
outside the mitochondria.
Krebs cycle happens in
_____________ the _________ of the mitochondria.
Cytoplasm
Matrix inside

16. Step 1: Citric Acid Production:
________________ enters mitochondria. _______ ___________ is removed, forming ________ ________.
Energy carrier now has electrons.
Pyruvic acid
Carbon dioxide
(Acetyl-CoA)
Diagram by Riedell

17. Another view of Citric Acid formation

18. Step 2: Energy Extraction (Citric Acid Cycle)
______ ______ enters the next stage forming ______ ______ and broken down.
More ______ ________ is released
More high energy ___________ gets carried away
Acetyl – Co A, citric acid
Carbon dioxide
Electrons
Notes: Sometime it’s called the “Citric Acid Cycle”
Diagram by Riedell

19. KREBS CYCLE: Overall Process
KREBS CYCLE PRODUCES:

20. Carbon dioxide is released into the ________________
WHERE DO THESE GO?
Carbon dioxide is released into the ________________
atmosphere

21. ATP can be used directly to supply __________ for the cell.
WHERE DO THESE GO?
ATP can be used directly to supply __________ for the cell.
High energy electron carriers move into the
____________________
Functions
Electron Transport Chain
Notes taken from:

22. The energy stored in ________ molecule is released in every living cell by another organelle called a ____________,
food
mitochondrion

23. Ingredients of respiration
The raw material (__________) of respiration:
A. ________: C6H12O6
B. _______: O2
reactants
Glucose
oxygen

24. Energy use produces interesting waste products:
A. _______ ________: CO2
B. ________: H2O
Carbon dioxide
Water

25. The Chemical Equation:
C6H12O6 +6O2= 6CO2+6H2O +energy
How would you describe this formula?

26. The chemical breakdown of glucose happens in two steps
Step 1. Splitting glucose: __________ This takes place in the cytoplasm
One 6 carbon _______ molecule is split in _____
Glycolysis happens _________ of the mitochondria, in the cytoplasm.
Don’t you chew your food too?
Glycolysis
Glucose
Two
outside

27. Glycolysis Movie
09B.mpg

28. Glycolysis
Glycolysis does NOT require ______ BUT it needs some ____________to get it started. What molecule do you think is going to supply the energy do this? _________. ***Put in ___ ATP, get back ___ ATP, so the NET gain is ____ ATP.
Oxygen, energy
ATP (2)

30. What happens after glycolysis:

31. WHATS THE BIG PICTURE?

32. Test yourself 1. What is the purpose of cellular respiration?
2. Where does it happen?
3. Why is oxygen needed?
4. What are the products?
5. What carries energy around the cell?
6. What are 2 organelles involved in storing energy for life?