They are characterized by a core formed by a nuclear membrane, inside of which is the genetic material. The most important parts are:
- Plasma membrane. Continuous layer that surrounds the cell and controls the exchange of substances with the outside
- Cytoplasm. Contents of the cell located between the plasma membrane and the nuclear membrane. Comprises a liquid medium or cytosol, comprising water and soluble substances, where the sparse organelles.
- Nucleus. Directs cell activity. Bounded by a double membrane with pores. It contains a liquid or nucleoplasm, where the nucleolus and chromatin
- Nucleolus. RNA & Proteins. Involved in the formation of ribosomes
- Chromatin. DNA and proteins. When a cell begins to divide and creates condensed chromosomes.
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