Biochemistry assist » Catabolic Pathways and also Metabolism » Carbohydrate management » Citric mountain Cycle » Reactants and also Products of the Citric mountain Cycle
Explanation:

Flavin mononucleotide (FMN) is not developed by the citric acid cycle. This flavin coenzyme is a reactant, but not a product, since FMN will get lessened to FMNH2.

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The rest of the answer options are products of the citric acid cycle (otherwise recognized as the Krebs cycle). 


*


Explanation:

Pyruvate is the finish product the glycolysis. ~ glycolysis, the three-carbon molecule pyruvate is converted into the two-carbon molecule acetyl-coenzyme A (acetyl-CoA). This is brought out through a mix of three enzymes collectively known together the pyruvate dehydrogenase complex. The switch of pyruvate come acetyl-CoA also produces one molecule of 

*
. Acetyl-CoA has actually one much less carbon than pyruvate. The third carbon indigenous pyruvate is lost as carbon dioxide (
*
) during the conversion of pyruvate to acetyl-CoA. Remind that since glucose is a six-carbon molecule, two molecules that pyruvate (three carbons each) are formed via glycolysis.


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Example concern #3 : Reactants and Products that The Citric mountain Cycle


The an initial reaction of the citric acid cycle is one aldol condensation involving which 2 molecules?


Possible Answers:

*
 and pyruvate


Oxaloacetate and also malate


Acetyl-CoA and also oxaloacetate


*
 and acetyl-CoA


Correct answer:

Acetyl-CoA and oxaloacetate


Explanation:

Pyruvate is developed in the last action of glycolysis, then, that is converted to the two-carbon molecule acetyl-coenzyme A (acetyl-CoA). This is carried out through a combination of three enzymes collectively known together the pyruvate dehydrogenase complex. The counter of pyruvate come acetyl-CoA to produce one

*
. Acetyl-CoA has actually one much less carbon than pyruvate. The third carbon that pyruvate is shed as carbon dioxide (
*
) during the conversion of pyruvate to acetyl-CoA. The citric mountain cycle starts when the four-carbon molecule, oxaloacetate combines with acetyl-CoA (a 2 carbon molecule) via an aldol condensation, yielding the six-carbon molecule citrate.


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Example concern #4 : Reactants and also Products that The Citric acid Cycle


At what step is

*
 produced during the citric acid cycle? 


Possible Answers:

During counter of oxaloacetate and acetyl-CoA to type citric mountain by citrate synthase


During conversion of succinate into fumarate by succinate dehydrogenase


During switch of succinate right into fumarate through succinate dehydrogenase


During switch of citric acid into isocitrate by acontinase


Correct answer:

During conversion of succinate into fumarate by succinate dehydrogenase


Explanation:

During the conversion the succinate into fumarate through succinate dehydrogenase, a single molecule of

*
 is diminished to
*
 as it accepts the hydrogens native succinate. 
*
 then feeds that is electrons into the electron transport chain in the within mitochondrial membrane.


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Example question #5 : Reactants and Products the The Citric acid Cycle


In the Krebs cycle, which step requires the formation of GTP?


Possible Answers:

Succinyl-CoA  succinate 


Isocitrate 

*
 alpha-ketoglutarate


Alpha-ketoglutarate 

*
 succinyl-CoA


Succinate 

*
 fumarate 


None that these, GTP is not a product the Krebs cycle


Correct answer:

Succinyl-CoA  succinate 


Explanation:

Succinyl-CoA synthetase performs substrate level phosphorylation at this step in the Krebs cycle, together that 

*
.


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Example inquiry #6 : Reactants and also Products that The Citric mountain Cycle


From a single molecule that glucose, two molecule of pyruvate are created which can be convert into two acetyl-CoA molecule to go into the citric acid cycle.


Starting indigenous a solitary molecule of glucose, how numerous molecules that NADH are formed in a solitary turn of the citric acid cycle consisting of the counter of pyruvate into acetyl-CoA? Do not encompass NADH formed throughout glycolysis, i beg your pardon is not component of the citric acid cycle.


Possible Answers:

*



*


*


Correct answer:


Explanation:

The switch of pyruvate come acetyl-CoA produces one molecule of NADH, but remember the each glucose yields two pyruvates, so the total NADH native this very first step is two. In ~ the citric mountain cycle, there space three measures in i m sorry NADH is a byproduct, however again we have to remember that each action occurs to two molecules, therefore three NADH byproducts for 2 molecules yields six NADH in the cycle proper. Therefore, the complete NADH developed in one revolve of the citric mountain cycle is eight NADH. 


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Example question #7 : Reactants and also Products the The Citric acid Cycle


Which the the following molecules space initial reactants of the citric mountain cycle?


Possible Answers:

Pyruvate


NADH


None the these are initial reactants of citric acid cycle


Correct answer:

None the these space initial reaction of citric mountain cycle


Explanation:

Citric mountain cycle inputs are derived from glycolysis outputs. Glycolysis to produce pyruvate molecules,

*
, and also ATP. The pyruvate molecules undergo reactions that convert the 3 carbon pyruvate come a two carbon acetyl CoA and an one carbon carbon dioxide. The acetyl-CoA molecules are then provided as the initial inputs for the citric acid cycle, together they are linked with oxaloacetate. Keep in mind that pyruvate chin does not go into the citric acid cycle.
*
 and
*
are electron carriers the are produced in the citric mountain cycle and also are offered in electron move chain to generate ATP.


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Example inquiry #8 : Reactants and also Products of The Citric acid Cycle


A glucose molecule start the cell have the right to indirectly produce __________

*
 and __________
*
 in the citric mountain cycle.


Possible Answers:

two . . . Six


three . . . One


six . . . Two


one . . . Three


Correct answer:

six . . . Two


Explanation:

A glucose (six carbons) molecule enters glycolysis and produces two 3 carbon molecules (pyruvate). Every pyruvate is damaged down right into a 2 carbon acetyl-CoA molecule that enters the citric acid cycle. Every acetyl-CoA molecule produces 3

*
 and one
*
 in the citric mountain cycle. This way that 2 acetyl-CoA (derived indigenous one glucose molecule) produces 6
*
 and two
*
 molecules in the citric acid cycle.


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Example concern #9 : Reactants and Products that The Citric acid Cycle


Which of the adhering to is true about the citric mountain cycle?


Possible Answers:

More than among these are true


The citric acid cycle produces GTP


The citric acid cycle produces carbon dioxide


Most that the intermediates the this cycle have actually four an ext carbons 보다 acetyl-CoA


Correct answer:

More than among these are true


Explanation:

Citric mountain cycle entails a series of reactions the are associated in the production of the necessary molecules because that electron move chain. The bicycle starts v a 2 carbon molecule (acetyl-CoA) binding come a four carbon molecule (oxaloacetate). This create a six carbon molecule (citrate) that can go with a collection of reactions. Many of these reactions involve a six carbon molecule. As mentioned, acetyl-CoA has two carbons; therefore, most of the intermediates in this cycle have six carbons, or four much more carbons 보다 acetyl-CoA. One rotate of citric acid cycle to produce

*
,
*
,
*
 (carbon dioxide) and also one GTP molecule(s).


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Example concern #10 : Reactants and also Products of The Citric mountain Cycle


Which of the following molecules associated in the citric mountain cycle initiates the bicycle by combining with acetyl-CoA?


Possible Answers:

Citrate


Succinate


Fumarate


Oxaloacetate


Malate


Correct answer:

Oxaloacetate


Explanation:

The very first step in the citric mountain cycle is because that acetyl-CoA come react v oxaloacetate. This forms citrate, i m sorry then continues through the cycle, eventually reforming the oxaloacetate molecule to redo the cycle.

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