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__ diffuses from the __ into the __.
__ itself does not enter hte __. It undergoes some chemical grooming first.
- pyruvate
- cytosol
- mitochondria
- pyruvate
- Krebs cycle
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Several things happen in the linker reaction. Explain
- a carbon atom is removed from pyruvate adn released as CO2, leaving a two carbon fragment
- Pyruvate is oxidized while NAD+ is reduced to NADH, storing energy
- A compound called coenzyme A, derived from a B vitamin, joins with the two carbon fragment remaining from pyruvate to form a molecule called acetyl CoA. It is the two carbon acetyl fragment that enters the cycle
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The linker reaction will not occur under what circumstance?
if O2 is not present, even though it isn't used
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Net gain of linker reaction
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Krebs Cycle location
mitochondria
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Krebs cycle starts with __ joining with __ to form __. The remaining eight reactions serve what purpose?
- acetyl COA
- oxaloacetate
- citric acid
- regenerating oxaloacetic acid at beginning, resulting in a cycle
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The nine reactions complete hte __, producing __ per glucose.
- oxidation of glucose to CO2 and H2O
- four CO2
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Because __ and __ contain much less energy than __, energy is released and is used to make three different high energy molecules.
- CO2
- H2O
- acetyl CoA
- ATP, which can directly be used
- NADH and FADH, which shuttle electrons to the ETC
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The series of reactions in the Krebs cycle will not occur under what circumstances?
if O2 is not present, even thouogh it's not used in the reactions
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Net gain of cell per glucose molecule in CAC
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