Free Printable Gel Electrophoresis

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Gel Electrophoresis

Total questions: 10

Worksheet time: 7mins

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Class

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In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

convert the DNA into gel

cut the DNA into fragments

change the color of the DNA

produce longer sections of DNA

A student performed a gel electrophoresis experiment. The results are represented in the diagram

below. Compared to the fragments at the top of the gel, the fragments at the lower end are

larger, and move slower

larger, and move faster

smaller, and move faster

smaller, and move slower

DNA fingerprinting works because

Most genes are dominant

All organisms contain RNA

The most important genes are different among most people

No two people, except identical twins, have exactly the same DNA

What is the purpose of gel electrophoresis?

helps cut DNA

count the genes in DNA

separates DNA based on size

allows for an exact replicated organism

Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

DNA is negatively charged so attracted to the positive end of the unit

DNA is positively charged to attracted to the negative end of the unit

the agarose gel in negatively charged

the agarose gel is positively charged

In gel electrophoresis, the largest DNA fragment will appear

closest to the starting wells

farthest from the starting wells

three quarters away from the starting wells

it depends on how many fragments there are

Which is the primary purpose of using restriction enzymes in gel electrophoresis?

It allows the strands of DNA to be cut into various lengths for testing

It restricts the number of base pairs that can be tested in a sample

It makes the testing simpler by moving the strands into the gel faster

It charges the DNA strands

Which two bear species are most closely related?

Bear 1 and Bear 2

Bear 1 and Bear 3

Bear 2 and Bear 3

There’s no way to tell

This laboratory procedure is known as

Gene cloning

gel electrophoresis

chromatography

cDNA synthesis

10.

What is the function of the gel in Gel Electrophoresis?

extract DNA from the liquid

filter the DNA as it moves through the system

buffer the DNA so it keeps moving

charge the DNA so it will move to the opposite side of the system

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Gel Electrophoresis

Total questions: 10

Worksheet time: 7mins

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