Students fractionating two proteins of unequal molecular weight noted that the proteins eluted from the sec column simultaneously. which of the following statements best explains this observation? (a) the shape of a molecule is unrelated to its rate of migration. (b) one of the proteins has a molecular weight beneath the exclusion limit. (c) the molecular weight of both proteins exceeds the exclusion limit. (d) both proteins possess equal charge at the buffered ph.
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