TITANIC
Launched: 31st May 1911
Passengers Lost: 818 (62%)
Total Lost: 1,502 (68%)
Crew Lost: 684 (77%)
WHY did soooo many die as they awaited rescue in the North
Sea?
WHY did soooo many die as they awaited rescue in the North
Sea? HINT: THE NORTH SEA IS COLD!!!!!
Function of
Cellular
Respiration…
harvesting the energy
of food for ATP
synthesis… so the
cells have energy for
WHAT if there is NO
electronegative oxygen
to pull electrons
down the chain????
Oxidative phosporylation
STOPS!
GAAAAK!!!!
Glucose
CYTOSOL
Pyruvate
No O2 present
Fermentation
O2 present
Cellular respiration
MITOCHONDRION
Ethanol
or
lactate
Acetyl CoA
Citric
acid
cycle
Fermentation the synthesis of ATP
via. glycolysis ONLY
in the absence of oxygen
QuickTime™ and a
decompressor
are needed to see this picture.
Alcohol fermentation is done by yeast and some kinds
of bacteria.
QuickTime™ and a
decompressor
are needed to see this picture.
yeast / bacteria.
The waste products of this process are ethanol and
carbon dioxide (CO2).
QuickTime™ and a
decompressor
are needed to see this picture.
yeast / bacteria.
The waste products of this process are ethanol and
carbon dioxide (CO2).
Humans have long taken advantage of this process in
making bread, beer, and wine.
Alcohol Fermentation 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2
2 Pyruvate
2 Lactate
Lactic acid fermentation
Carboxyl (X2) to CO2 (X2) 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2
2 Pyruvate
2 Lactate
Lactic acid fermentation
Acetaldehyde produced (X2) 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2
2 Pyruvate
2 Lactate
Lactic acid fermentation
Acetaldehyde (X2) REDUCED 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2
2 Pyruvate
2 Lactate
Lactic acid fermentation
Ethanol Produced (X2) 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2
2 Pyruvate
2 Lactate
Lactic acid fermentation
Alcohol Fermentation 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2
2 Pyruvate
2 Lactate
Lactic acid fermentation
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decompressor
are needed to see this picture.
Fermentation after glycolysis (no O2
Lactic acid fermentation is done by some fungi, some
available)
bacteria like in yogurt, and sometimes by our muscles.
Fermentation after glycolysis (no O2
Lactic acid fermentation is done by some fungi, some
available)
bacteria like in yogurt, and sometimes by our muscles.
Normally our muscles do cellular respiration like the
rest of our bodies, using O2 supplied by our lungs and
blood. However, under greater exertion when the
oxygen supplied by the lungs and blood system can’t
get there fast enough to keep up with the muscles’
needs, our muscles can switch over and do lactic
acid fermentation. In the process of lactic acid
fermentation, the 3-carbon pyruvic acid molecules are
turned into lactic acid.
Lactic Acid Fermentation 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2 Pyruvate
2 Lactate
Lactic acid fermentation
Pyruvate (X2) reduced by NADH2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2 Pyruvate
2 Lactate
Lactic acid fermentation
Lactate (X2) formed 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2 Pyruvate
2 Lactate
Lactic acid fermentation
Fermentation 2 ADP + 2 P
Glucose
2 ATP
Glycolysis
2 NAD+
2 NADH
+ 2 H+
2 Pyruvate
2 Lactate
Lactic acid fermentation
QuickTime™ and a
decompressor
are needed to see this picture.
Fermentation extension of glycolysis
Anaerobic
catabolism
organic molecules.
of
•Yields only 2 ATP’s
•Electrons are transferred
from NADH to pyruvate
(not the e- transport chain)
y ruv ate as a key juncture in catabolism
aerobic
anaerobic
Fermentation
3.5bya
no oxygen