What does it mean to say that glycolysis is an anaerobic process

Biology

1 answer:

alex41 [277]3 years ago

6 0

It means that it doesn’t require oxygen.

Glycolysis is the first step of cellular respiration, which occurs in cytosol. During this process, glucose is broken down into two molecules (with three carbon atoms) called pyruvates, two ATP molecules and one NADH. Glycolysis can be divided into two phases:

• Energy-requiring phase in which two ATP molecules are used

• Energy-releasing phase in which four ATP molecules are made.

Anaerobic glycolysis is performed when amounts of oxygen (O2) are limited. In this type of glycolysis lactate and only two molecules of ATP are produced. Anaerobic glycolysis is effective during intense exercises.

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Explanation:

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One type of anaerobic respiration formed by yeast is called alcohol fermentation (also called ethanol fermentation). This begins with glycolysis, where one molecule of glucose is broke down into 2 molecules of pyruvate. The energy from this reaction generates 2 molecules of ATP, and converts NAD+ to NADH.

Then, the two molecules of pyruvate are further broke down into 2 acetaldehydes (releasing two molecules of carbon dioxide as a by-product). These two molecules of acetaldehyde are then converted into tw molecules of ethanol, using the H ions from NADH, converting it back to NAD+. See the attached picture

This process is taken advantage of to brew beer and wine.