This video shows a trip inside a eukaryotic cell. Eukaryotic cells are protected by a cell membrane (yellow) and contain a nucleus surrounded by a nuclear envelope (dark blue). Nuclear pores (red) on the nuclear envelope allow for the movement of materials, such as mRNA, in and out of the nucleus. Inside the nucleus, DNA (blue) is in a compact form of nucleosomes. Here a portion of DNA, coding for a specific gene, is transcribed by RNA polymerase II (grey) into RNA (lilac). The initiation factors (multicolored) stay attached to the DNA and a new RNA polymerase II (RNA Pol II) attaches, repeating transcription.

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