1. Chemiosmosis
CO2
H2O 2 2 32

2. Cytoplasm (Cytosol)

3. Glycolysis Where? = In the Cytoplasm # ATP Produced = Net Gain of 2
Electron Carriers = Produces NADH
Oxygen = NOT required (anaerobic)
What Happens? = 1 molecule of Glucose is split into 2 molecules of Pyruvic Acid (pyruvate)

4. OR Anaerobic Fermentation in the Cytosol
Net Gain of
Aerobic
In Mitochondria
OR Anaerobic Fermentation in the Cytosol

5. Fermentation Where? = In the Cytoplasm # ATP Produced = NONE
Electron Carriers = Produces NAD+
Oxygen = NOT required (anaerobic)
What Happens? = If oxygen is NOT available, Pyruvic Acid is broken down into either Ethanol & CO2 (yeast) or Lactic Acid (animals) INSTEAD of going through the Kreb’s Cycle

6. Alcoholic Fermentation

8. Kreb’s Cycle Where? = In the Mitochondria (matrix)
What Happens? = If oxygen IS available, fermentation does NOT happen.
# ATP Produced = 2
Electron Carriers = Produces 8 NADH and 2 FADH2
Oxygen = REQUIRED (aerobic)

9. Kreb’s Cycle
What Happens? = If oxygen IS available, fermentation does NOT happen.
Pyruvic Acid is converted into Acetyl CoA.
This joins with oxaloacetic acid to form citric acid.
Citric Acid goes through a cycle where CO2 and electron carriers are formed.
The 2 original pyruvic acid molecules are completely broken down into CO2

10. Kreb’s (Citric Acid) Cycle

11. Electron Transport Chain
# ATP Produced = 32
Electron Carriers = Uses NADH and FADH2 to produce a H+ ion gradient
Oxygen = REQUIRED (aerobic)
Where? = In the Mitochondria (across INNER membrane)

12. Electron Transport Chain
What Happens? =
The electron carriers (NADH & FADH2) are used to pump H+ ions across the inner membrane (from the Matrix to the Intermembrane Space).
This creates a concentration gradient that allows ATPsynthase to convert ADP into ATP (chemiosmosis).
6 H2O is produced as a byproduct of ETC.

15. Electron Transport Chain
INTERMEMBRANE SPACE
HIGH
INNER MEMBRANE
LOW
MATRIX

18. 6 O2 + C6H12O6  6CO2 + 6 H2O + 36 ATP 3. ETC 2. Krebs Cycle
Oxygen (6 O2) & Glucose (C6H12O6 )
Water (6 H2O) & Carbon Dioxide (6CO2 ) & 36 ATP

19. Cellular Respiration Videos
ETC Animation
Mr. Anderson

21. Comparison of Photosynthesis and Cellular Respiration

24. Chemiosmosis
CO2
H2O 2 2 32

25. Photosynthesis
Cellular Respiration
Purpose
Sequence of Steps
Location
Reactants
Products
Equation

26. Purpose Photosynthesis Cellular Respiration
Convert Sunlight into Chemical Energy in order to Build Carbohydrates for use as Food
Break Down Carbohydrates into Chemical Energy (ATP) to be used to Power Life Processes

27. Sequence of Steps Cellular Respiration Photosynthesis
Light Dependent Reaction
Light Absorption & ETC (Photosystems 2 then 1) & Chemiosmosis
 Calvin Cycle
Glycolysis  Krebs Cycle  Electron Transport Chain (& Chemiosmosis)

28. Location Cellular Respiration Photosynthesis Mitochondria:
Glycolysis = Cytoplasm (outside mitochondria)
Krebs Cycle = Matrix
ETC = Inner Membrane
Chloroplast:
Light Dependent = Thylakoid
Calvin Cycle = Stroma

29. Reactants Cellular Respiration Photosynthesis
Glucose & Oxygen
Glycolysis = Glucose
Krebs Cycle = Oxygen & Pyruvate (acetyl CoA)
ETC = Oxygen, NADH, FADH2, & ADP
Light, Water & Carbon Dioxide
Light Dependent = Water (6 H2O)
Calvin Cycle = Carbon Dioxide (6 CO2)

30. Carbon Dioxide, Water, & ATP
Products
Cellular Respiration
Photosynthesis
Carbon Dioxide, Water, & ATP
Glycolysis = Pyruvate, 2 ATP, NADH
Krebs Cycle = ATP, 8 NADH, FADH2, 6 CO2
ETC = 6 H2O, 32 ATP
Glucose & Oxygen
Light Dependent = Oxygen (6 O2), ATP, & NADPH
Calvin Cycle = Glucose (C6H12O6)

31. Equation Photosynthesis Cellular Respiration
6CO2 + 6H2O + Light  C6H12O6 + 6O2
Cellular Respiration
C6H12O6 + 6O2  6CO2 + 6H2O + 36 ATP

32. Review Videos
Mr. Anderson Photos. & CR