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What does the carbon atoms in pyruvic acid end up as in the atmosphere following the Krebs cycle?
if you're talking about after the carbons are exhaled through CO2 the the pyruvate need to give off more CO2 for it to be Acetyl Co-A to pass through the mitochondrial membrane to go through the Krebs cycle. so in the Krebs cycle it's acetyl Co-A. Then it goes to the electron transport chain.
What is starting molecule for Krebs cycle?
The Krebs cycle starts with acetyl CoA, and combines with oxaloacetate to form citrate, a six-carbon molecule. Citrate is further oxidized until oxaloacetate is again reached at the end to restart..
What happens in every sequence of the dark Reaction?
here are three things this cycle go through. The first thing that must happen is that the reaction must fixate the carbon dioxide. Then the reduction of 3PG that was produced in the first reaction. Then this will form carbohydrates. Through this reaction it uses phosphorylation. The reaction will then need to regenerate the carbon dioxide. After this whole cycle, the final product will then be trios phosphate.
What process is cellular respiration?
In cellular respiration, the body cells receive glucose and oxygen molecules from the bloodstream. The oxygen and glucose molecules come together inside the cells to create energy in order for the cells to work, with a leftover of carbon dioxide.
What breaks down nutrients and releases ATP during cellular respiration?
You need a glucose molecule and 2 ATP`s to form 36 ATP`s. Glycolysis, piruvate, Krebs cycle, electron transfer chain, ATP synthesis.
What does Krebs cycle need to proceed?
Pyruvates
Why do human need oxygen to survive?
Oxygen is required for cellular respiration, the production of ATP. Oxygen is an electron receptor in the Krebs cycle with reaction that transforms O2 to C02 fueling every chemical reaction (albeit indirectly) in the body.
Is the Krebs cycle part of the photosynthesis?
Only electron transport chain need oxygen. Other two steps do not need
What type of chemical reaction is need to absorb energy to proceed?
Endothermic Reaction.... (Just to help you out someone helped me with this question and I GOT IT CORRECT!)
What does the carbon atoms in pyruvic acid end up as in the atmosphere following the Krebs cycle?
if you're talking about after the carbons are exhaled through CO2 the the pyruvate need to give off more CO2 for it to be Acetyl Co-A to pass through the mitochondrial membrane to go through the Krebs cycle. so in the Krebs cycle it's acetyl Co-A. Then it goes to the electron transport chain.
What is starting molecule for Krebs cycle?
The Krebs cycle starts with acetyl CoA, and combines with oxaloacetate to form citrate, a six-carbon molecule. Citrate is further oxidized until oxaloacetate is again reached at the end to restart..
What happens to acetyl CoA if its not needed in the Krebs cycle?
Acetyl CoA is multifunctional; it can be used to produce fat or ATP. If the body needs energy, acetyl CoA enters the Krebs cycle. If the body doesn't need energy, acetyl CoA is channelled into an anabolic pathway that synthesizes lipids as a way of storing large amounts of energy as fat.
What gas is needed in dark reaction?
CO2 is needed for it. That is to get carbon
What happens in every sequence of the dark Reaction?
here are three things this cycle go through. The first thing that must happen is that the reaction must fixate the carbon dioxide. Then the reduction of 3PG that was produced in the first reaction. Then this will form carbohydrates. Through this reaction it uses phosphorylation. The reaction will then need to regenerate the carbon dioxide. After this whole cycle, the final product will then be trios phosphate.
Does oxidation of pyruvate need oxygen to occur?
Yes.In a cell the only pathway that oxidizes pyruvate is the series of reactions in the mitochondria that lead eventually to complete oxidation to carbon dioxide and water. This process requires oxygen as a final acceptor of the hydrogen atoms removed during this oxidation.The complete pathway involves the link reaction and the reactions of the Krebs (citric acid) cycle.
What kind of reaction is once started will continue by itself?
No. It requires an energy input (the activation energy) before it can proceed. For some reactions the energy needed can be as low as simply heat from the room and others need thousands of Watts of electrical power.
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.
