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Q: What is pyruvate converted into when oxygen is not present?
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When oxygen is plentiful pyruvate from glucose is converted to?

acetyl CoA

Muscle cells when an individual is excerising heavily and when the muscle becomes oxygen deprived convert pyruvate to lactate What happens to the lactate in the skeletal muscle cells?

The lactate is taken to the liver and converted back to pyruvate.

When oxygen is available pyruvate enters the what?

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.

What happens to accumulated lactic acid when oxygen is present?

When oxygen is present, accumulated lactic acid can be converted back into pyruvate through a process called oxidative phosphorylation. Pyruvate can then enter the mitochondria to participate in the citric acid cycle and further generate ATP through aerobic respiration.

What happen to pyruvate when absent of oxygen?

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.

What happens to pyruvic acid after there is no 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.

What are the stages of Cellular respiration.?

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

When oxygen is present what porduct enters the second stage of cellular respiration?

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.

What are the three possible fates of pyruvate and what conditions are necessary for each pathway?

Pyruvate can be converted to acetyl-CoA under aerobic conditions in the presence of oxygen, entering the citric acid cycle. It can be converted to lactate in anaerobic conditions when oxygen is limited. Pyruvate can also undergo fermentation to produce ethanol or lactic acid in certain microorganisms.

Anaerobic conditions in animals pyruvate is converted to what?

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 changed to?

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.

What is is the order of the steps for cellular respiration?

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