lactate
acetyl CoA
When oxygen is available, pyruvate enters the mitochondria to undergo aerobic respiration. In the mitochondria, pyruvate is converted into acetyl-CoA in the presence of oxygen, leading to the production of ATP through the Krebs cycle and oxidative phosphorylation.
The lactate is taken to the liver and converted back to pyruvate.
Lactic acid diffuses into the bloodstream, and carried to the liver. Here, it's converted back into glucose, but in order to do this, extra energy is required, and as such extra oxygen is needed.
In the absence of oxygen, pyruvate is converted into lactate through a process called fermentation. This allows for the regeneration of NAD+ so that glycolysis can continue to produce ATP in the absence of oxygen.
Pyruvic acid is converted into lactate (lactic acid) in the absence of oxygen through a process called fermentation. This allows for the regeneration of NAD+ to keep glycolysis going.
The Stages of Cellular Respiration 1. Glucose is converted to pyruvate producing a small amount of ATP and NADH. 2. When oxygen is present, pyruvate and NADH are used to make a large amount of ATP. When oxygen isn't present, pyruvate is converted to either lactate or ethanol and carbon dioxide. In Stage One, the breakdown of glucose happens, with glycolysis. In Stage Two, ATP is produced. Stage one is called the Calvin cycle, and stage two is called the Krebs cycle. For more information, go to http://Biology.about.com/od/cellularprocesses/a/cellrespiration.htm
When oxygen is present, pyruvate molecules produced in glycolysis enter the second stage of cellular respiration, which is the citric acid cycle (Krebs cycle). In this cycle, pyruvate is converted to acetyl CoA, which then enters the citric acid cycle to generate ATP through a series of redox reactions.
actually there are four fates of pyruvate.. usually under aerobic conditions it is converted to acetyl co a. and under anerobic conditions it is converted to lactate. it may also b converted to alanine and oxaloactate by enzymes alt and pyruvate carboxlyse respectively
In animals under anaerobic conditions, pyruvate is converted to lactate through the process of lactate fermentation. This process helps regenerate NAD+ to continue glycolysis in the absence of oxygen.
During the anaerobic phase of respiration, glucose is converted into pyruvate through a process called glycolysis. This process does not require oxygen and occurs in the cytoplasm of the cell. If oxygen is not present, pyruvate can then be further converted into lactic acid (in animals) or ethanol and carbon dioxide (in some microorganisms) to generate a small amount of ATP.
1. Glucose is metabolised to form pyruvate (glycolysis) Anaerobic (without oxygen): - Pyruvate is converted to lactate or ethanol Aerobic (in the presence of oxygen): - Pyruvate is converted to acetyl CoA - Citric Acid Cycle - Electron transport chain