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Biotechnology

Biotechnology videos and other resources are available to you and your fellow teachers. Share the wealth of information -- it is free to all.

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Electrophoresis, Principles and Practice

Electrophoresis, Principles and Practice explains how gel electrophoresis is used to separate DNA, RNA and proteins.

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DNA and Electrophoresis Simulation, FB1228

DNA and Electrophoresis Simulation provides a fun, kinesthetic way to teach DNA structure and the role of restriction enzymes.

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Biotechnology Laboratory System, FB1732

Biotechnology Laboratory System shows how you can build a biotechnology and forensics lab with this system.

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Six-Gel Electrophoresis Apparatus, FB1713

Six-Gel Electrophoresis Apparatus shows how you can save time and money by running the entire class’s experiment at once.

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Annealing DNA Fragments

Annealing DNA Fragments is a Flinn Biology Minute that explains how to prevent a large band of DNA from forming near the well when you run electrophoresis.

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Three Pipet Choices for Electrophoresis

Three Pipet Choices for Electrophoresis is a Flinn Biology Minute that helps take the guesswork out of choosing the pipet that's best for your students and your budget for your electrophoresis activities.

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How Long Should I Run My Electrophoresis Gel?

How Long Should I Run My Electrophoresis Gel? The answer depends on five key factors. If you want to run a gel in one class period--and get great results--watch this Flinn Biology Minute

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Dyeing for Electrophoresis

How can a mixture of molecules, too small to be seen with even a high-powered microscope, be separated from one another? Such was the dilemma facing scientists until the development of a process that is now standard in laboratories worldwide—gel electrophoresis. Laboratories rely heavily on this proven and reliable technique for separating a wide variety of samples, from DNA used in forensics and for mapping genes, to proteins useful in determining evolutionary relationships.

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Basic Electrophoresis

One of the most poorly understood concepts in electrochemistry has to do with the flow of electricity in an electrochemical cell. Many students assume that the flow of electricity through the solution(s) is due to the flow of electrons. In all types of electrochemical cells, electrons carry the current through an external wire or conductor, but ions carry the current through the solution. Anions move toward the anode and cations move toward the cathode to prevent charge buildup at the electrodes. A central feature of electrochemical cells, migration of ions in an electric field is also the basic principle in electrophoresis.

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Pour water through a series of funnels with varying stem sizes to demonstrate reaction rate-determining steps.