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The Mass Spectrometer. In order to measure the characteristics of individual molecules, a mass spectrometer converts them to ions so that they can be moved about and manipulated by external electric and magnetic fields. The three essential functions of a mass spectrometer, and the associated components, are:
How does the nuclear pore complex work to transport material in and out of the nucleus? The pore serves as a water filled channel and has an effective diameter of 10 nm. Therefore, transport in and out of the nucleus can occur in several ways.