Which of the following statements is true about eukaryotic cells?

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They have a cell wall made of peptidoglycan

They lack membrane-bound organelles

They have a well-defined nucleus enclosed by a nuclear membrane

They reproduce by binary fission

answer is B.

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Detailed Solution

Eukaryotic cells have a well-defined nucleus containing the cell's genetic material (DNA), which is enclosed by a double membrane called the nuclear envelope.

This membrane separates the genetic material from the cytoplasm, which is the fluid-filled space inside the cell that contains various organelles, including membrane-bound organelles such as mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosomes.

Unlike prokaryotic cells, which lack a nucleus and membrane-bound organelles, eukaryotic cells are more complex and evolved from prokaryotic cells through a process of endosymbiosis.

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