Gel Electrophoresis

The video tutorial introduces gel electrophoresis, a crucial lab technique in molecular biology for separating DNA and proteins. It explains the process, where DNA molecules move through a gel under an electric field, allowing separation based on size. The tutorial covers the setup, including the gel, electrodes, and the sieving process. It also discusses data analysis using DNA-binding dyes and various applications, such as gene amplification and protein separation. The simplicity and utility of gel electrophoresis make it essential in modern molecular biology labs.

What is the primary purpose of gel electrophoresis?

• To synthesize new DNA molecules

• To amplify genes using PCR

• To create recombinant DNA plasmids

• To separate large molecules like DNA

In gel electrophoresis, what is the role of the negatively charged cathode?

• It attracts DNA molecules

• It repels DNA molecules

• It neutralizes DNA molecules

• It binds DNA molecules

How does the size of DNA molecules affect their movement through the gel?

• Larger molecules move faster

• Smaller molecules move slower

• Smaller molecules move further

• Size does not affect movement

Which technique can be used to further analyze DNA after gel electrophoresis?

• Northern blotting

• Eastern blotting

• Western blotting

• Southern blotting

Besides DNA, what else can gel electrophoresis separate?

• Vitamins

• Carbohydrates

• Proteins

• Lipids