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a. Glycolysis releases less than a quarter of the chemical energy in glucose that can be released by cells; most of the energy remains in__
the two molecules of pyruvate
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i. With molecular oxygen,what does pyruvate do?
ii. Glycolysis produces __net ATP molecules
- the pyruvate enters a mitochondrion, where the oxidation of glucose is completed
- two
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a. Pyruvate enters mitochondria (__transport)à converted to __
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The conversion of pyruvate serves what purpose?
links glycolysis and the CAC and is carried out by a multienzyme complex in three steps
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What are the three steps of the linker reaction?
- 1. Pyruvate’s carboxyl group, which is already fully oxidized and has little chemical energy, is removed and given off as a molecule of CO2
- 2. The remaining two- carbon fragment is oxidized, forming acetate. The extracted electrons are transferred to NAD+, storing energy in NADH
- 3. Coenzyme A is attached via its sulfur atom to acetate, forming acetyl CoA
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Is the linker reaction exergonic or endergonic?
exergonic
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