Which of the following is correct?
| 1. | Cells of all living organisms have a nucleus.
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| 2. | Both animal and plant cells have a well defined cell wall.
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| 3. | In prokaryotes, there are no membrane bound organelles.
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| 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.
