Which of the following is correct?
1. Cells of all living organisms have a nucleus.
2. Both animal and plant cells have a well defined cell wall.
3. In prokaryotes, there are no membrane bound organelles.
4. Cells are formed de novo from abiotic materials.
Membrane-bound organelles are organelles surrounded by a double membrane. Nucleus, mitochondria, chloroplasts, etc., are examples of such organelles. These cells organelles are absent from prokaryotes.
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