1. oxygen+ glucose carbon dioxide+ water +energy
Cellular Respiration
oxygen+ glucose carbon dioxide+ water +energy
6O2 + C6H12O6  6CO2 + 6H2O +ATP

2. Cellular Respiration What is it?
The process in which a cell uses oxygen to break down glucose and provide the cell with ATP.
This is an exergonic reaction. (Energy is released)
Respiration occurs in Producers and Consumers.

3. What do you notice about this equation?
6O2 + C6H12O6  6CO2 + 6H2O +ATP
oxygen+ glucose carbon dioxide+ water +energy
What do you notice about this equation?

4. Chemical Pathways Where are the reactants? Where are the products?
Glucose
Glycolysis
Electron Transport
Krebs Cycle
Fermentation (without 0xygen)
Alcohol or lactic acid
Where are the reactants? Where are the products?

5. Overview of Cellular Respiration (Aerobic)
Electrons carried in NADH
Electrons carried
in NADH and
FADH2
Pyruvic acid
Glucose
Glycolysis
Cytoplasm
Cellular respiration is the process that releases energy by breaking down food molecules in the presence of oxygen. Glycolysis takes place in the cytoplasm. The Krebs cycle and electron transport take place inside the mitochondria.
Mitochondrion
Copyright Pearson Prentice Hall

6. Glycolysis Where? Cytoplasm of the cell What happens?
One molecule of glucose(6C) is broken in half, producing two molecules of pyruvic acid(3C)
2 NADH (electron carrier) molecules are produced and head to the ETC
4 ATP are produced, but 2 were needed to initiate the process = Net of 2 ATP

7. The cell has a net gain of 2 ATP
Glycolysis
The cell has a net gain of 2 ATP

8. Krebs Cycle Also called the Citric Acid Cycle
Occurs in the mitochondria
Pyruvic acid is broken down and CO2 is released
NADH and FADH2 go to the ETC.
Net Gain of 2 ATP are made.

9. This Cycle Happens Two Times
FADH2
FADH+
This Cycle Happens Two Times
Produces 2 ATP and NADH

10. Electron Transport Chain
Occurs in the Mitochondra
High-energy electrons from NADH and FADH2 are passed into and along the electron transport chain.
As H is released to form NAD and FAD, 32 ATP molecules are formed.

11. Figure 9–7 Electron Transport Chain
Mitochondrion
Electron Transport
Hydrogen Ion Movement
Channel
Intermembrane
Space
ATP synthase
Inner
Membrane
Matrix
ATP Production
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12. Total energy produced by aerobic respiration = 36 ATP

13. Overview of Cellular Respiration (Aerobic)
Electrons carried in NADH
Electrons carried
in NADH and
FADH2
Pyruvic acid
Glucose
Glycolysis
Cytoplasm
Cellular respiration is the process that releases energy by breaking down food molecules in the presence of oxygen. Glycolysis takes place in the cytoplasm. The Krebs cycle and electron transport take place inside the mitochondria.
Mitochondrion
Copyright Pearson Prentice Hall

14. Anaerobic Respiration (Fermentation)
Glycolysis still occurs first
Lactic Acid Fermentation
Glucose  Lactic Acid and NAD+
Occurs in Human Muscles
Alcoholic Fermentation –
Produces Ethyl Alcohol and Carbon dioxide
Ex) Yeast use this to make bread, also used to produce alcohol

15. Fermentation = Net Gain of 2 ATP
Without Oxygen= Anaerobic

16. Chemical Pathways Glucose Glycolysis Electron Transport Krebs Cycle
Fermentation (without 0xygen)
Alcohol or lactic acid

17. Review Questions
1. What is the balanced formula for cellular respiration? __________ + _________  _________ + __________ + _________ 2. What is the main purpose of cellular respiration? 3. When respiration occurs in the absence of oxygen it is often called anaerobic respiration, what is the other name for this process?

18. Review Questions
4. Which type of anaerobic respiration occurs in humans? 5. Which process produces more energy aerobic or anaerobic respiration? 6. Which process is required before both aerobic and anaerobic respiration? 7. List the three processes required to complete aerobic respiration?

19. Review Questions
8. Which one of three processes above produces the most energy? 9. Which organelle in the cell is the site of most of cellular respiration? 10. Which organisms do cellular respiration?

20. Comparing Photosynthesis and Cellular Respiration
Function
Energy storage
Energy release
Location
Chloroplasts
Mitochondria
Reactants
CO2 and H2O
C6 H12O6 and O2
Products
C6H12O6 and O2
Endergonic/Exergonic
Endergonic
Exergonic