The unit of measurement used to describe the size of a protein in gel electrophoresis is daltons.
Daltons, a unit of molecular weight, are used to measure protein size. The mass of a hydrogen atom, which is 1.66 x [tex]10^{-24}[/tex] grams, is considered to be one dalton. Since the majority of proteins have masses in the thousands of dalton range, the term kilodalton (kD) is frequently used to refer to the molecular weight of proteins.
Gel electrophoresis is a technique used to divide macro-molecules like DNA, RNA, and proteins as per their size and charge. Running a current through a gel that contains the target molecules is the process of electrophoresis. The molecules will move through the gel in different directions or at different rates depending on their size and charge, allowing them to be segregated from one another.
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