Which of the following statements is true?
Correct answer: B. Prokaryotic cells came before eukaryotic cells.
- A. Prokaryotic cells are bigger than eukaryotic cells.
- B. Prokaryotic cells came before eukaryotic cells.
- C. Eukaryotic cells do not have a nucleus.
- D. Eukaryotic cells are simple, prokaryotic cells are complex.
Explanation
Prokaryotic cells may have arisen more than 3.5 billion years ago while eukaryotes are thought to have first appeared about 1.5 billion years ago.
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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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