
DNA Sequencing Techniques and Concepts

Interactive Video
•
Biology, Chemistry, Science
•
11th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of dideoxyribonucleotides in DNA sequencing?
They initiate DNA synthesis.
They terminate DNA chain elongation.
They act as a catalyst in DNA replication.
They repair DNA strands.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are the shortest DNA fragments identified in the gel lanes?
By their thickness.
By the distance they travel from the well.
By their charge.
By their color.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do three bands appear in the adenine lane?
Because adenine is the most abundant nucleotide.
Because adenine is located at three separate spots in the chain.
Because adenine is the first nucleotide in the sequence.
Because adenine is the last nucleotide in the sequence.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What causes the chain elongation to stop at adenine-specific sites?
Insertion of DD ATP.
Insertion of DT CTP.
Insertion of DD GTP.
Insertion of DD TTP.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many bands appear in the thymine lane and why?
One band, because thymine is rare.
Four bands, because thymine is the most frequent nucleotide.
Three bands, because thymine is located at three separate sites.
Two bands, because thymine is less frequent.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of DD TTP in the sequencing process?
It catalyzes thymine synthesis.
It repairs thymine mismatches.
It stops chain elongation at thymine sites.
It initiates chain elongation.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are guanine and cytosine-specific fragments identified?
By their thickness.
By their charge.
By their unique lengths.
By their color.
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