GEL ELECTROPHORESIS

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What is gel electrophoresis?

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A laboratory technique used to separate DNA, RNA, or proteins based on their size and charge.

Front

What is the principle behind gel electrophoresis?

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Molecules are pulled through a gel matrix by an electric field, with smaller molecules moving faster than larger ones.

Front

What is the role of agarose gel in gel electrophoresis?

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Agarose gel acts as a medium that allows the separation of nucleic acids or proteins based on size.

Front

What is the purpose of a DNA ladder in gel electrophoresis?

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A DNA ladder is a set of known DNA fragments used as a reference to determine the size of unknown DNA samples.

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What does it mean if bands on a gel electrophoresis result are of different intensities?

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Different intensities indicate varying amounts of DNA or RNA present in the samples.

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How can gel electrophoresis be used in forensic science?

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It can be used to compare DNA samples from crime scenes to suspects to establish identity.

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What is the significance of the buffer solution in gel electrophoresis?

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The buffer solution maintains pH and provides ions that carry the electric current during electrophoresis.

Front

What is the difference between DNA and RNA gel electrophoresis?

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DNA is typically separated using agarose gel, while RNA may require denaturing conditions to prevent secondary structures.

Front

What is the outcome if the gel is run for too long?

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Running the gel for too long can cause the bands to diffuse, leading to unclear results.

Front

What is the function of a loading dye in gel electrophoresis?

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Loading dye helps visualize the sample and allows for tracking the progress of electrophoresis.