Our neighbours have ____ cat and ____ dog. (MCQ - CHOOSE ONE) • a • an • the
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Centrifugation is a method of separating molecules having different densities by spinning them in solution around an axis (in a centrifuge rotor) at high speed. ... Centrifugation is used to collect cells, to precipitate DNA, to purify virus particles, and to distinguish subtle differences in the conformation of molecules.
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a cat
the dog is the answer
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