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Galina-37 [17]
3 years ago
10

What happens to pyruvate molecules formed in glycolysis in the absence of oxygen?

Biology
1 answer:
Mars2501 [29]3 years ago
6 0
Absence of oxygen means anaerobic respiration ; which has 2 different pathways.

First Pathway ; Alcoholic fermentation which takes place in yeast.

Pyruvate is decarboxylated into ethanal releasing co2 as waste product.
Ethanal is toxic , so its reduced by help of NADH to ethanol in presence of alcohol dehydrogenase enzyme , and Free NAD is released to continue glycolysis.

2) The second pathway is Lactic fermentation which takes place in mammalian muscles.

Pyruvate accepts hydrogen and is converted to lactate by the help of enzyme lactate dehydrogenase , again free NAD is released to continue glycolysis.

Hope I made it clear enough :)
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13-15 grams...

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Do adult individuals stop growing? explain your thinking in detail​
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The first one I believe
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The work of Charles Darwin and Alfred Wallace on the origin of the Earth's species extended the ideas of Lyell's uniformitariani
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<h2>The work of Charles Darwin and Alfred Wallace </h2>

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An inland location, because land has lower specific heat than water

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