glycolysis and cellular respirationweb.eng.fiu.edu/brownm/bme3403/powerpoint...
TRANSCRIPT
Let’s Focus on Glucose!!!
Aerobic Cellular RespirationC6H12O6 + O2 CO2 + H2O + chemical and heat energy
Stages of Cellular RespirationGlycolysis
_________________________________
Transition Reaction
Krebs Cycle
Electron Transport Chain
Chemiosmosis
Stages of Cellular Respiration
Glycolysis
_________________________________
Transition Reaction
Krebs Cycle
Electron Transport Chain
Chemiosmosis
Transition Reaction
pyruvate pyruvate
Carbon
dioxide
CO2
Carbon
dioxide
CO2
Acetyl-CoA Acetyl-CoA
NADH NADH
Stages of Cellular Respiration
Glycolysis
_________________________________
Transition Reaction
Krebs Cycle
Electron Transport Chain
Chemiosmosis
Krebs Cycle
Acetyl-CoA Acetyl-CoA
Carbon
dioxide
CO2
Carbon
dioxide
CO2
Carbon
dioxide
CO2
Carbon
dioxide
CO2
FADH2 NADH NADHFADH2
ATP ATP
3 3
1 1
1 1
Stages of Cellular Respiration
Glycolysis
_________________________________
Transition Reaction
Krebs Cycle
Electron Transport Chain
Chemiosmosis
Electron Transport Chain
Electron transport
chain
matrix
Intermembrane
compartment
ATP synthesizing
enzyme
Channel protein
Electron Transport Chain
e-
H+ H+
H+
H+
H+ H+
H+
H+H+
H+
2 H+ + 1/2 O2H2OOxygen is the final
electron acceptor
Chemiosmosis
H+ H+
H+
H+
H+ H+
H+
H+H+
H+High H+
concentration
Low H+
concentration
H+
ADP ATP34 ATP
produced!
Summing Up
(Aerobic Cellular Respiration)
• Glycolysis 2 ATP
• Transition Reaction 0 ATP
• Krebs Cycle 2 ATP
• Electron Transport Chain 0 ATP
• Chemiosmosis 34 ATP
-----------------------------------------------------
• Total 38 ATP
Lactic Acid Fermentation
Pyruvate
C3H4O3
Lactate
C3H6O3
Lactate
C3H6O3
Pyruvate
C3H4O3
NADH
NAD+
NADH
NAD+
Room temperature about three to
four days until the bottle feels hard to
a forceful squeeze.
Move to a cool place (below 65 F).
Refrigerate overnight to thoroughly
chill before serving.
Louis Pasteur
• First to describe
alcoholic
fermentation
– discovered yeast as
the organism that
turned sugar into
alcohol
• Pasteur Effect
Pasteur Effect
Tube 1 Tube 2
Yeast
Nutrients
Air
Yeast
Nutrients
No air
Glucose use
Which uses more?
Pasteur Effect
• Tube 1 (Air)
– Aerobic Cellular
Respiration
– How many ATP’s
generated per
glucose?
– 38 ATP
• Tube 2 (No Air)
– Fermentation
– How many ATP’s
generated per
glucose?
– 2 ATP
Alcohol Fermentation
Acetaldehyde
C2H4O
Ethanol
C2H5OH
Ethanol
C2H5OH
Acetaldehyde
C2H4O
NADH
NAD+
NADH
NAD+
Summing Up
(Fermentation)
• Glycolysis 2 ATP
-----------------------------------------------------
• Total 2 ATP