Multiple Choice
Which of the following elements is commonly involved in the formation of organic compounds?
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Intro to Organic Chemistry
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Which of the following processes was made possible by the presence of photosynthetic bacteria on Earth?
A
The synthesis of amino acids
B
The production of oxygen in the atmosphere
C
The formation of the ozone layer
D
The development of multicellular organisms
Verified step by step guidance1
Understand that photosynthetic bacteria, such as cyanobacteria, were among the first organisms to perform photosynthesis, a process that converts carbon dioxide and water into glucose and oxygen using sunlight.
Recognize that the production of oxygen as a byproduct of photosynthesis by these bacteria led to a significant increase in atmospheric oxygen levels, known as the Great Oxygenation Event.
Consider how the increase in atmospheric oxygen allowed for the formation of the ozone layer, which protects the Earth from harmful ultraviolet radiation.
Acknowledge that the presence of oxygen in the atmosphere was crucial for the evolution of aerobic respiration, which is more efficient than anaerobic processes and allowed for the development of more complex, multicellular organisms.
Conclude that the presence of photosynthetic bacteria was pivotal in transforming Earth's atmosphere and enabling the conditions necessary for the evolution of diverse life forms, including the synthesis of amino acids and the development of multicellular organisms.
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