Gene expression

After RNA has been transported to the cytoplasm, it is translated into protein. Control of this process is largely dependent on the RNA molecule.

Eukaryotic gene expression is more complex than prokaryotic gene expression because the processes of transcription and translation are physically separated.

RNA is transcribed, but must be processed into a mature form before translation can begin.

The DNA of prokaryotes is organized into a circular chromosome, supercoiled within the nucleoid region of the cell cytoplasm.

Like prokaryotic cells, the transcription of genes in eukaryotes requires the action of an RNA polymerase to bind to a DNA sequence upstream of a gene in order to initiate transcription.

For a cell to function properly, necessary proteins must be synthesized at the proper time and place.

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