MCQ on Evolution of Prokaryotes with Answers

The evolution of prokaryotes marks the origin of life on Earth, dating back over 3.5 billion years. These simple, unicellular organisms lack a nucleus and membrane-bound organelles. The earliest prokaryotes were likely chemoautotrophs, deriving energy from inorganic molecules. Cyanobacteria, a group of photosynthetic prokaryotes, revolutionized life by producing oxygen during photosynthesis, leading to the Great Oxygenation Event around 2.4 billion years ago. This paved the way for aerobic metabolism and more complex life forms. Prokaryotes diversified into two domains: Bacteria and Archaea, exhibiting remarkable adaptability to extreme and varied environments, making them essential players in Earth’s ecological and evolutionary history. This is an MCQ on Evolution of Prokaryotes with Answers.

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1. 
The earliest forms of life on Earth were most likely:

2. 
Which of the following features is most commonly associated with the evolutionary origin of prokaryotes?

3. 
Which of the following is believed to be the ancestral lineage from which mitochondria and chloroplasts evolved?

4. 
The theory that prokaryotes were the first organisms to evolve on Earth is supported by evidence that they:

5. 
The first prokaryotes likely evolved in an environment that was:

6. 
The presence of ribosomal RNA in prokaryotes is evidence that:

7. 
Which of the following is a key evolutionary advantage that prokaryotes have over eukaryotes?

8. 
The endosymbiotic theory suggests that prokaryotic cells:

9. 
Which of the following prokaryotic features supports the idea that they were the precursors to eukaryotic cells?

10. 
The primary metabolic pathways of early prokaryotes likely included:

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mcq on evolution of prokaryotes




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