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How many molecule of carbon dioxide are produce when Krebs cycle operates once?
One molecule of glucose is broken down into two molecules of pyruvate during glycolysis. Each pyruvate molecule then enters the Krebs cycle and is fully oxidized to produce three molecules of carbon dioxide. Therefore, in total, six molecules of carbon dioxide are produced when the Krebs cycle operates once.
In cellular respiration a two carbon molecule combines with a four carbon with four carbon molecules to form citric acid as part of?
In cellular respiration, a two-carbon molecule (acetyl-CoA) combines with a four-carbon molecule (oxaloacetate) to form citric acid in the first step of the citric acid cycle (Krebs cycle). This process occurs in the mitochondria and is essential for the production of ATP through the oxidation of acetyl-CoA.
What electron carriers are produced in the Krebs cycle?
There are two electron carriers produced in the citric acid (Krebs Cycle). The first is NAD+ or NADH in its reduced form. The other is FAD+ which becomes FADH2 after being reduced. One turn of the citric acid cycle produces 1 and 3 molecules of FADH2 and NADH respectively.
What is the difference between citric acid and Krebs cycle?
The major difference in both is that,glyoxylate cycle occurs in glyoxysome of germinating plants while TCA occurs in the mitochondria of animals. Glyoxylate cycle involves 5 steps,while TCA involves 8 steps. The enzyme isocitrate lyase,converts isocitrate to alpha-ketoglutarate in TCA cylce,but in glyoxylate cycle,it converts isocitrate to succinate and glyoxylate,where the name camr from.
Why can't fatty acids be converted directly to glucose?
Oh my god, this has confused me for months and I finally think I get it, so I hope I can explain it decently. When fatty acids are oxidized, the acetyl-CoA can enter the Krebs cycle, and one would think that the oxaloacetate generated by the Krebs cycle could be converted to acetyl-CoA, which could then be converted to pyruvate for gluconeogenesis. This can't happen, though, because even though oxaloacetate is made, there is no net increase in oxaloacetate (two carbons are lost in the Krebs cycle for every two in the acetyl-CoA coming in). Oxaloacetate can't be taken out of the cycle, then, because then the cycle would be depleted and the only way to replenish it is through one of the anapleoritic reactions, which involve products of glycolysis (PEP and pyruvate). If there is enough PEP or pyruvate around to replenish the oxaloacetate you're taking out to make glucose, chances are you don't need to make glucose in the first place. Pyruvate from glucose or amino acids can be used to make sugars before it is converted to acetyl-CoA, but the pyruvate dehydrogenase complex reaction is irreversible, so once pyruvate is made into acetyl-CoA it cannot be used to make glucose; it is committed to either fatty acid synthesis or the Krebs cycle. Plants can make glucose from fatty acids, but this is only because they are able to use the glyoxlyate cycle instead of the Krebs cycle. The glyoxylate cycle bypasses the step in the Krebs cycle (the alpha-ketoglutarate dehydrogenase step) in which the two carbons are lost as CO2, so when plant acetyl-CoA enters the glyoxylate cycle there IS a net increase in oxaloacetate which can be used to make pyruvate.
Is the glycolysis cycle another name of the Krebs cycle?
No. They are two different cycles.
Is the product of glycolysis that enters the Krebs cycle?
Fats and proteins are brought into the Krebs cycle by being converted. They can either be converted to glucose or acetyl which will go through Krebs cycle.
Which two cycle are linked by the production and utilization of carbon dioxide where do these cycles occur?
The Calvin Cycle in Photosynthesis and The Krebs Cycle in Cellular Respiration. The Calvin Cycle occurs in chloroplasts and The Krebs Cycle occurs in the Mitochondria.
How many ATP yields in kreb's cycle?
Only two ATP is yield of Krebs cycle .
From Krebs cycle how many carbon dioxide molecules are released?
From the cycle itself, two molecules of CO2 are released. One from Isocitrate to alpha-Ketoglutarate (with an Oxalosuccinate molecule as an intermediate compound), and other in the step from alpha-Ketoglutarate to Succinyl-CoA.
What two hydrogen carrying molecules are formed during the Krebs cycle?
The two high energy molecules that are produced in the Krebs Cycles are NADH and FADH2. :D
What Krebs cycle pickup molecule?
The Krebs cycle picks up acetyl-CoA, which is a two-carbon molecule derived from the breakdown of carbohydrates, fats, and proteins. Acetyl-CoA enters the Krebs cycle to be further oxidized to produce energy in the form of ATP.
What are the reactants of Krebs cycle?
The reactants of the Krebs cycle are acetyl CoA, oxaloacetate, and water. This series of reactions occurs in the mitochondria and involves the oxidation of acetyl CoA to produce ATP and reduced coenzymes.
What two ways can cells break food down?
Krebs cycle and glycolysis
What two of the products of the Krebs cycle?
CO2, NADH/H+, FADH2, ATP.
How many time times the Kerry's cycle run to break down one molecule of glucose?
The Krebs cycle (or citric acid cycle) runs twice for each molecule of glucose that is broken down. This is because one glucose molecule is converted into two molecules of pyruvate during glycolysis, and each pyruvate then enters the Krebs cycle. Thus, for every glucose molecule, the Krebs cycle processes two acetyl-CoA molecules, resulting in two turns of the cycle.
How many cycle after Krebs reaction one glucose molecule has been broken down to CO2?
One glucose molecule undergoes glycolysis, which breaks it down into two molecules of pyruvate. Each pyruvate then enters the Krebs cycle (or citric acid cycle), where it is fully oxidized. Since each glucose results in two pyruvate molecules, two cycles of the Krebs cycle occur per glucose molecule, leading to the production of CO2 as a byproduct in each cycle. Therefore, a total of six CO2 molecules are generated from one glucose molecule after two Krebs cycles.
