1. Ch 7 Cellular Respiration

2. 7.1 Glycolysis & Fermentation

3. MMMMmmm.... You eat lunch… Digest its macromolecules...into
How do you get the ENERGY out?

4. Cellular Respiration— What is it?
Breaking down organic molecules (from food!)
& Making ATP
For cell’s chem reactions
Make ATP by breaking down org molec
Use ATP to do cell’s work

5. Opposite of Photosynthesis— Flip the equation!!
Cell Resp:
6O2 + C6H12O6  6CO2 + 6H2O + ATP
you can’t “make” sunlight, so you make
ATP instead!!
Glucose + 6O2 –enzymes 6CO2 + 6H2O + ATP

6. 3 Main Processes Glycolysis Aerobic: Cell Respiration
Anaerobic: Fermentation
Oxygen NO
Oxygen
1. Gly- org cmpds  3C pyruvic acid, little ATP, NADH
Anaerobic
2. Aerobic
pyr acid broken down, NADH used, make lots ATP
3. Anaerobic Fermentation

7. Fermentation (without oxygen)
Aerobic Respiration:
in mitochondria!
Glycolysis:
In cell’s cytoplasm
Glucose
Glycolysis
Krebs cycle
Electron transport
Fermentation (without oxygen)
Alcohol or lactic acid
Glucose
Acetyl CoA
6C & 4C molecules
Pyruvic Acid
Anaerobic Respiration:
In cell’s cytoplasm
No ATP but it does allow for more glycolysis to take place
Ethanol & CO2 (plants, yeast)
Or lactic Acid (animals)

9. 1. Glycolysis In the cytosol No Oxygen! Basics: break glucose, Make:
pyruvic acid, 2 net ATP, & NADH (e- carrier)
in the cytoplasm.
It does not require oxygen.
Glucose + Phosphates (from ATP); split in ½  G3P (same as in calvin cycle)
+ 2 P, NAD+  NADH (e- acceptor);
P removed to make ATPs; 2 net ATP

10. Glycolysis

11. 2. Aerobic Respiration Only If Oxygen is available
Break Pyruvic acid, lots of reactions (another cycle), lots of ATP made
More on this in 7.2! 

12. 3. Anaerobic Respiration
Fermentation

14. Fermentation (Anaerobic Respiration)
Breakdown of Pyruvic Acid
NO OXYGEN required
AFTER Glycolysis (bc need pyr. acid)
DOES NOT Make ATP
but it does make NAD so glycolysis can still happen
pyruvic acid w/o use of oxygen.
& regenerate NAD+ for reuse in glycolysis (to make ATP)
AFTER Glycolysis
does not produce any ATP.

15. Fermentation Lactic Acid Fermentation Alcoholic Fermentation
Muscle Cells (ouch! The burn!!)
Pyruvic Acid  Lactic Acid
NAD also made, goes back to do more glycolysis
Yeast, bacteria, plants
**ethanol that’s put in gas is from corn!
Pyruvic acid  Ethanol + carbon dioxide
NAD also, for more glycolysis
Other uses:
Yogurt, bread, beer, wine...it’s all made from fermentation!

16. What’s the difference? Similarities?

17. HW Review! p. 136 #1-3,7

18. 7.2 Aerobic Respiration

20. 2. Aerobic Respiration C6H12O6 + 6 O2 → 6 H2O + 6 CO2 + 38 ATP
Must have oxygen
Make LOTS of ATP
within the mitochondria
Mitochondria
Link Reaction
Kreb’s Cycle
Electron Transport Chain

21. Mitochondria...Draw It! Inner & Outer Membranes Cristae Matrix
outer and inner membrane
matrix: dense solution enclosed by inner membrane
cristae: the folds of the inner membrane that house the electron transport chain and ATP synthase

22. Structure of Mitochondrion

23. Aerobic Respiration 3 Main Steps: Mitochondria Link Reaction
Kreb’s Cycle
Electron Transport Chain

24. Link Reaction: Pyr Acid into Mito
Link Reaction: Pyr Acid into Mito. Matrix  Acetyl CoA (loses a C as CO2; NADH made...goes to ETC)

26. Conversion of Pyruvic Acid: you do NOT need to know the details!
NAD+
NADH + H+
Pyruvic
Acid C
Acetyl-CoA C
CO2 C
CoA
CoA
Kreb's Cycle
Citric Acid C
Oxaloacetic
Acid C
NAD+
NADH + H+
NADH + H+
CO2 C
NAD+
Ketoglutaric
Acid C
Malic
Acid C
NAD+
NADH + H+
Succinic
Acid C
CO2 C
FADH2
ATP
ADP
+ P
FAD

27. Hans! (Krebs) 

28. 2. KREBS Cycle: Acetyl CoA broken down; make CO2, H+, ATP, NADH, FADH2 (another e- carrier) in Mit Matrix 1 glucose made every 2 turns
2 NADH
8 NADH
2 FADH2 2 2

29. 6C 4C 4C 4C

30. Pair-Share… Summarize the Krebs Cycle

31. 3. Electron Transport Chain
REVIEW--Up to this point:
4 ATP (2 from glycolysis, 2 from Krebs)
10 NADH (2 from glycolysis, 2 from link, 6 from Krebs)
2 FADH2 (from Krebs)
Go to E.T.C.,
34 ATP made

32. 3. Electron Transport Chain
ETC is lots of proteins in cristae folds that pass e-s & energy, H+
ATP Synthase (enzyme, at end of ETC )
Pump H+ from space to matrix, makes ATP
OXYGEN: final e- acceptor, end of ETC
Makes WATER!! (remember the equation?)
E- carriers: NADH and FADH2
10 NADH ATP
2 FADH ATP
Ox = final e-acceptor at end ETC; form water (stops if no ox b/c e- build up and don’t get passed)
E- carriers

33. The E.T.C. Electron Transport Hydrogen Ion Movement Channel
ATP Production
ATP synthase
Channel
Inner
Membrane
Matrix
Intermembrane
Space

34. Electron Transport Chain’s the Last Step! (Thank goodness, right?! )

35. Energy Summary

37. p ,8

38. We’ll do the rest of this when I return
We’ll do the rest of this when I return...do the Ch Review and hopefully I’ll be back tomorrow!

39. p ,5,7,9,11,12,16,18,20

40. p.139

43. p. 147
P.147

45. chloroplast
sunlight
Thylakoid
chlorophyll
oxygen
WATER
Energy-carrying molecules transferred to light-independent reactions
6-C sugar (glucose)
Light-indep. Rxns (Calvin Cycle)
CO2 from atmosphere

46. WHY do your cells need Oxygen?
oxygen must accept the final e-
If not, it stops the ETC!

47. Summary of Cell Respiration
1ST STEP?
Glycolysis- converts glucose to pyruvic acid, only makes a little ATP
Aerobic-
pyruvic acid  CO2 & H2O
ONLY in presence of oxygen
Creates A LOT of ATP

48. Comparing Photosynthesis & Cell Resp.
graphic organizer

49. Chemical Equation
C6H12O CO2 + 6H2O + ATP
What's this?

50. Light reactions and Calvin Cycle

51. Harvesting Chemical Energy
Cell Respiration
Process in which cells make ATP by breaking down organic compounds
This is done in both heterotrophs and autotrophs