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How many pyruvates enter the Krebs cycle from glycolysis in one given cycle?
Wiki User
∙ 14y ago
Glucose is a six carbon sugar when glycolysis is over it is split into two three carbon molecules called pyruvic acid (pyruvates). When this is done the link cycle begins (second stage of respiration) . In the link reaction the pyruvic acid loses a carbon that becomes CO2. The remaining two carbons are called acetic acid. This then meets enzyme coenzyme A and becomes acetylcoenyme A. This combination is the start of the kreb's cycle.
Wiki User
∙ 14y ago
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Can pyruvic acid use in the Krebs cycle?
The pyruvic acid that is produced by glycolysis is used as the initial input for the Krebs Cycle (also called citric acid cycle). In the initial step of the Krebs Cycle, the pyruvic acid is converted to acetyl-CoA via pyruvate decarboxylation. This continues a series of chemical reactions leading to the production of 2 ATP molecules.
What can you do with the end product of glycolysis?
The end products of glycolysis enter the Kreb's Cycle or Citric Acid Cycle.
How many Krebs cycle occur per glucose?
twice
What stages of cellular respiration occur in mitochondria?
Glycolysis is the first stage of cellular respiration, but it is in the cytosol that a series of reactions happen and glucose is broken down into 2 pyruvates. When these enter the mitochondrion through active transport (transport proteins), the pyruvate binds with Coenzyme A to become acetyl CoA which then enters the citric acid cycle. So the citric acid cycle, specifically the acetyl CoA attaching to the 4-carbon molecule oxaloacetate is the first stage of cellular respiration that occurs in the mitochondria. Check.
What is the fate of pyruvate in mitochondrial respiration?
Pyruvate is formed from glucose during glycolysis. Should the conditions be aerobic, pyruvate will be converted into Acetyl Coenzyme A (CoA) with the help of an enzyme called "pyruvate dehydrogenase." Bi-products of this reaction include CO2 and NADH This occurs in the matrix of the mitochondria. Acetyl CoA will then continue into the Krebs cycle/citric acid cycle. After this, the products of the cycle (NADH and FADH2) will be involved in oxidative phosphorylation and the electron transport chain where large amounts of ATP will be produced. This occurs in the inner layer of the mitochondria. Should there be anaerobic conditions, then animals can convert pyruvate into lactate. Or, in plants; pyruvate is converted into ethanal and then into ethanol in a process called fermentation.
What happens to pyruvate molecules formed glycolysis in the absence of oxygen?
they will enter the Krebs cycle
In anaerobic respiration what steps produce carbon dioxide?
It's called the Krebs's cycle and it consists of the steps to convert a 2 carbon sugar into CO2 and H2O. (And you don't own the genetic code to do this ... only the mitochondria do.)
What is a product of aerobic respiration that will enter into and begin the Krebs cycle?
glycolysis yiels 2 pyruvate molecules that will undergo Kreb's cycle
What happens glycolysis?
The pyruvates enter the mitochondria to further undergo cellular respiration. The ATP molecules are used by the cell.
Can pyruvic acid use in the Krebs cycle?
The pyruvic acid that is produced by glycolysis is used as the initial input for the Krebs Cycle (also called citric acid cycle). In the initial step of the Krebs Cycle, the pyruvic acid is converted to acetyl-CoA via pyruvate decarboxylation. This continues a series of chemical reactions leading to the production of 2 ATP molecules.
When does Calvin cycle begin?
When acetyl CoA and oxaloacetate is present.
Does pyruvic acid enters the krebs cycle?
Pyruvic acid cycle does enter the Krebs cycle and is turned into acetyl coenzyme A.
What can you do with the end product of glycolysis?
The end products of glycolysis enter the Kreb's Cycle or Citric Acid Cycle.
Do humans require oxygen to enter the Krebs cycle?
yeah!
When fats are broken down as energy sources their components enter .?
They enter the Krebs Cycle.
How many Krebs cycle occur per glucose?
twice
What stages of cellular respiration occur in mitochondria?
Glycolysis is the first stage of cellular respiration, but it is in the cytosol that a series of reactions happen and glucose is broken down into 2 pyruvates. When these enter the mitochondrion through active transport (transport proteins), the pyruvate binds with Coenzyme A to become acetyl CoA which then enters the citric acid cycle. So the citric acid cycle, specifically the acetyl CoA attaching to the 4-carbon molecule oxaloacetate is the first stage of cellular respiration that occurs in the mitochondria. Check.
