MCQ on Evolution of Eukaryotic Cells with Answers

Eukaryotic cells evolved from prokaryotic ancestors through endosymbiosis, a process where one cell engulfed another, leading to a mutualistic relationship. This theory suggests that mitochondria and chloroplasts, present in eukaryotes, are descendants of ancient prokaryotes, likely aerobic bacteria. Over time, these engulfed prokaryotes became essential organelles, providing energy efficiency. The evolution of the eukaryotic cell also involved the development of a nuclear membrane, compartmentalizing genetic material and enabling more complex gene regulation. The increased structural and functional complexity of eukaryotes facilitated the rise of multicellular organisms and greater biological diversity. This is an MCQ on Evolution of Eukaryotic Cells with Answers.

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1. 
The origin of the eukaryotic cell is believed to have involved:

2. 
According to the endosymbiotic theory, which prokaryote is most likely the ancestor of mitochondria?

3. 
Which feature of mitochondria supports the endosymbiotic theory of eukaryotic cell evolution?

4. 
What is a key piece of evidence that suggests chloroplasts evolved from cyanobacteria?

5. 
The presence of a nuclear membrane in eukaryotic cells most likely evolved to:

6. 
Which of the following is NOT considered a key event in the evolution of the eukaryotic cell?

7. 
The acquisition of organelles such as mitochondria and chloroplasts through endosymbiosis most likely provided early eukaryotes with an advantage in:

8. 
Which characteristic is shared by both mitochondria and chloroplasts, supporting their endosymbiotic origin?

9. 
The development of phagocytosis, which allowed cells to engulf other organisms, was crucial for the evolution of:

10. 
Which of the following provides the best support for the theory that mitochondria and chloroplasts were once free-living prokaryotes?

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MCQ on Evolution of Eukaryotic Cells




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