In a cell, the nucleus is a membrane-bound organelle that contains chromosomes and serves as the cell's control center. The nucleus is responsible for DNA replication, transcription, and RNA processing. The nucleus also tells the cell what to do, how to grow, and when to reproduce. The nucleus is surrounded by two concentric membranes, the inner and outer nuclear membranes. The nuclear membrane has pores that allow certain molecules to pass into and out of the nucleus.
In a cell, the nucleus is a membrane-bound organelle that contains chromosomes and serves as the cell's control center. The nucleus is responsible for DNA replication, transcription, and RNA processing. The nucleus also tells the cell what to do, how to grow, and when to reproduce.
The nucleus is surrounded by two concentric membranes, the inner and outer nuclear membranes. The nuclear membrane has pores that allow certain molecules to pass into and out of the nucleus.
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