Understanding PCR and Gel Electrophoresis
Interactive Video
•
Biology
•
9th - 10th Grade
•
Practice Problem
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of using PCR in forensic analysis?
To create new DNA sequences
To change the genetic code
To duplicate DNA for crossmatching
To destroy unwanted DNA
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During the PCR process, what is the role of the denaturation step?
To cool the DNA
To split the DNA strands
To add nucleotides
To attach primers
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of Tac polymerase in PCR?
To add nucleotides to DNA strands
To cool the DNA
To attach primers
To break hydrogen bonds
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does gel electrophoresis achieve in DNA analysis?
It separates DNA fragments by size
It duplicates DNA
It destroys DNA
It changes DNA sequences
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do restriction enzymes assist in DNA analysis?
By changing DNA sequences
By cutting DNA at specific sequences
By duplicating DNA
By tagging DNA with radioactive markers
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using a second restriction enzyme in DNA analysis?
To change the DNA sequence
To cut DNA at the same sites
To ensure different cutting sites
To duplicate DNA
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of radioactive tagging in gel electrophoresis?
To destroy DNA
To change DNA sequences
To mark specific DNA fragments
To duplicate DNA
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