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JulijaS [17]
1 year ago
8

The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when ________.

Biology
1 answer:
Leokris [45]1 year ago
3 0

Answer :There was enough oxygen in the atmosphere to support a major burst of life on Earth

Explanation:

The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when there was enough oxygen in the atmosphere to support a major burst of life on Earth

For the first half of the Earht's history, there was no oxygen in the atmosphere. It was inhabited only by single-celled organisms.Of  those simple life forms, the cyanobacteria may have. evolved a way to take energy from sunlight, and used it to make sugars out of water and carbon dioxide. They used the same chemical process we know as photosynthesis. This released vast quantities of oxygen into the atmosphere and  triggered the evolution of complex life.

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The biosynthesis of glutamic acid  can be obtianed from the reductive amination of γ-ketoglutaric acid

γ-Ketoglutaric acid is a common precursor in synthesis of glutamic acid. Addition of NADPH and ammonia or alpha amino acid with   γ-Ketoglutaric acid produces glutamic acid. Enzymes involved in this reduction amination  process are glutamate dehydrogenase and/or transaminase.

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