Gel Electrophoresis Lab Quiz: Questions & Solutions
What is TNF alpha? (Select all that apply)
Check All That Apply
It is a protein that helps the body resist some types of cancer.
It is a protein that helps the body fight infectious diseases
It is a lipid that helps the body resist some types of cancer.
It is a lipid that helps the body perform mitosis and meiosis.
All of the answer choices are correct Right Ans - It is a protein that helps
the body fight infectious diseases
Gel electrophoresis can be used to separate molecules by (Select all that
apply) Right Ans - length
size
charge
In gel electrophoresis, how are the DNA samples added to the wells? Right
Ans - A micropipette is used
Why does DNA flow toward the positive side of the gel chamber? Right Ans
- DNA has a negative charge and is attracted by the positive side.
Why is bromophenol blue added to the individual DNA samples? Right Ans
- It allows the observer to view how far the DNA samples travel.
In gel electrophoresis, what is the agarose used for? Right Ans - making the
gel
In the gel electrophoresis lab, you determined the ________ of three different
DNA samples. Right Ans - genotype
How does the DNA rate of travel differ for small DNA fragments and large DNA
fragments? Right Ans - Small fragments travel farther than large fragments.
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