
Understanding Gene Expression and DNA Analysis Techniques

Interactive Video
•
Biology
•
9th - 12th Grade
•
Hard
RICHARD LEE
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of isolating mRNAs from cells?
To observe the cell structure under a microscope
To extract proteins for pharmaceutical use
To analyze gene expression by creating cDNA
To modify the genetic material directly
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does reverse transcriptase play in RT-PCR?
It synthesizes mRNA from DNA
It helps in replicating DNA
It uses mRNA to create a complementary DNA strand
It breaks down the mRNA molecules
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a poly-dT primer used in the process of RT-PCR?
To initiate the replication of DNA
To degrade the mRNA after cDNA synthesis
To separate double-stranded DNA
To help reverse transcriptase start DNA synthesis
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of amplifying specific cDNA molecules in gene expression studies?
To decrease the quantity of DNA for analysis
To identify which genes are active during certain stages
To change the genetic expression in cells
To observe the physical characteristics of DNA
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does gel electrophoresis contribute to understanding gene expression?
By visualizing the amount of specific cDNA amplified
By measuring the electrical charge of DNA
By separating proteins by size
By altering the structure of DNA
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main advantage of using DNA microarray assays in genetic research?
To directly alter gene expression
To analyze the expression of multiple genes simultaneously
To observe physical characteristics of cells
To create new DNA sequences
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do fluorescent tags help in DNA microarray assays?
They replicate DNA fragments
They indicate which genes are expressed by emitting light
They help in cutting DNA at specific locations
They stabilize the DNA structure
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