EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following correctly sequences the order in which bacterial cells appeared on Earth?
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Aerobic bacteria, Photosynthetic bacteria, Anaerobic bacteria
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Anaerobic bacteria, Aerobic bacteria, Photosynthetic bacteria
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Anaerobic bacteria, Photosynthetic bacteria, Aerobic bacteria
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Photosynthetic bacteria, Aerobic bacteria, Anaerobic bacteria
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Explanation:
Detailed explanation-1: -A new study by an Imperial researcher suggests that this more primitive form of photosynthesis evolved in much more ancient bacteria than scientists had imagined, more than 3.5 billion years ago.
Detailed explanation-2: -The first cells consisted of little more than an organic molecule such as RNA inside a lipid membrane. One cell (or group of cells), called the last universal common ancestor (LUCA), gave rise to all subsequent life on Earth. Photosynthesis evolved by 3 billion years ago and released oxygen into the atmosphere.
Detailed explanation-3: -Life arose in a world without oxygen and the first organisms were anaerobes.
There is 1 question to complete.