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Question

The technique used for separating molecules by passing electric current is

A
Fractionation
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B
Centrifugation
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C
Electrophoresis
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D
ELISA
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E
Chromatography
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Solution

The correct option is C Electrophoresis
Electrophoresis is a technique, in which particles of different sizes and charges are separated due to their movement to different distances under the influence of an electric field, e.g : nucleic acid, proteins, amino acids, nucleotides etc.
Chromatography is a technique of separating molecular components of a mixture by using the principle of partition coefficient.
Cell fractionation is the technique of separating and rupturing cells and separating the cellular components for study. It has two steps - homogenisation (rupturing of cells) and differential centrifugation (separation of different components of homogenate).
ELISA stands for Enzyme Linked immunosorbent Assay. It is an assay procedure used in diagnosis of AIDS.

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