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Pathways that Harvest Chemical Energy part 2
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Pyruvate oxidation involves __ transport of pyruvate & __ into the mitochondrial matrix.
active; NADH
Within the mitochondrial matrix, __ complex transforms pyruvate into __
pyruvate dehydrogenase; acetyl CoA
Pyruvate is oxidized to __ & __ is released. __ is reduced to __, capturing energy.
acetate; CO2; NAD+; NADH
Some energy is stored by combining __ & __ to form acetyl CoA.
acetate; CoA (coenzyme A)
all steps in pyruvate oxidation
Within the mitochondrial matrix, (3 enzyme complex) pyruvate removes carbon as CO2 (decarboxylation reaction)
Pyruvate is oxidized to acetate.
NAD+ is reduced to NADH + H+ (2 electrons), capturing energy
addition of CoA is combined with acetate yields acetyl CoA
(page 40 on slide)
products of pyruvate oxidation
2 CO2
2 NADH (4 total electrons)
2 acetyl CoA (electron rich)
__ from pyruvate oxidation enters the citric acid cycle.
acetyl group of acetyl CoA
inputs into the citric acid cycle
acetyl CoA
water
electron carriers (NAD+, FAD, GDP)
(Energy captured by electron carriers. Electron carriers must be oxidized in order for citric acid cycle to continue.)
outputs of the citric acid cycle
CO2
reduced electron carriers
ATP
(The end result of the citric acid cycle is highly oxidized. All carbons have been released as waste.)
The acetyl group & __ form citrate (citric acid)
oxaloacetate (highly oxidized)
What happens in the citric acid cycle? Be able to recognize what happens in each step on page 45 - 49 on slide
Each step is catalyzed by an enzyme
CoA is removed and recycled
redox reaction and decarboxylation
oxidation produces of NADH & CO2
removal of CoA & substrate phosphorylation (production of ATP)
more redox reactions
products of the citric acid cycle
6 NADH
2 FADH2
2 ATP
4 CO2
highly oxidized and carboxylized
Any type of food you eat (proteins, complex carbs, fats) will eventually lead to __
the citric acid cycle
(page 52 on slide)
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Author
sophathida
ID
324349
Card Set
Pathways that Harvest Chemical Energy part 2
Description
Week 2: Ch. 8
Updated
2016-10-10T06:33:44Z
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