Which of the following statement is true?
Correct answer: B. Prokaryotic cells evolved before eukaryotic cells
- A. Prokaryotic cells are larger than eukaryotic cells
- B. Prokaryotic cells evolved before eukaryotic cells
- C. Eukaryotic cells lack a nucleus, while prokaryotic cells possess one.
- D. Eukaryotic cells are simpler, while prokaryotic cells are more complex
Explanation
The correct answer is that prokaryotic cells evolved before eukaryotic cells. Prokaryotes are among the earliest forms of life, originating over 3.5 billion years ago, whereas eukaryotic cells arose about 1.5 billion years ago, following the development of more intricate cellular structures. The other statements are incorrect: prokaryotic cells are typically smaller than eukaryotic cells, eukaryotic cells indeed have a nucleus whereas prokaryotic cells do not, and eukaryotic cells are generally more complex due to their compartmentalized structures and organelles.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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