What is the primary focus of Nikolai's genetics lesson?

DNA Sample Analysis and Contamination

Interactive Video
•
Biology, Science, Chemistry
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
RNA transcription processes
Protein synthesis
DNA gel electrophoresis analysis
DNA sequencing techniques
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the case study, from which source was DNA extracted?
Bacterial cultures
Soil samples
Animal cells
Leaves
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What issue was identified in the DNA sample from the case study?
Lack of DNA bands
Incorrect gel preparation
Presence of contamination
Excessive DNA concentration
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of contamination was observed in the DNA sample?
Bacterial contamination
Chemical impurities
RNA or smaller DNA fragments
Protein contamination
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the presence of smaller DNA or RNA fragments affect the gel electrophoresis results?
They cause the gel to degrade
They do not appear on the gel
They move faster than the main DNA band
They move slower than the main DNA band
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the movement of high molecular weight DNA indicate about the sample?
The DNA is highly degraded
The DNA is intact and undamaged
The DNA is not suitable for PCR
The DNA is contaminated with proteins
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is the degraded DNA sample still usable for PCR?
Only if the sample is purified first
Yes, a little degradation does not affect PCR
Only if the degradation is below 10%
No, any degradation makes it unusable
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What advice is given for improving future gel electrophoresis results?
Ensure proper sample preparation
Use a higher concentration of DNA
Increase the voltage during electrophoresis
Use a different type of gel
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final message of the video?
Consult a professional for analysis
Repeat the experiment with new samples
Discard the current results
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