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457038
Creating an E.Coli Library
Description
Year 2 Quiz on Creating an E.Coli Library, created by gina_evans0312 on 29/12/2013.
No tags specified
genetics and genomics
recombinant dna
year 2
Quiz by
gina_evans0312
, updated more than 1 year ago
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Created by
gina_evans0312
almost 11 years ago
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Resource summary
Question 1
Question
Electroporations- passing electricity through a mix of DNA and bacteria causes DNA to be taken up
Answer
True
False
Question 2
Question
What does N stand for?
Image:
Library_Size (image/png)
Answer
The no of clones needed
P of getting a clone with the desired gene
Genome size
Question 3
Question
What are the meanings of i and g?
Image:
Library_Size (image/png)
Answer
i = Library size g= probability of getting desired gene
i = avg insert size g = genome size
i = probability of getting desired gene g = genome size
Question 4
Question
The larger the genome, the larger the library required to replicate it
Answer
True
False
Question 5
Question
When is cDNA used?
Answer
When an organism has a lot of non-coding DNA
When an organism is very small
When the DNA is degraded
Question 6
Question
How is cDNA made?
Answer
Converted from mRNA
Converted from snoRNA
Converted from siRNA
Question 7
Question
Less than 1% of the genome is mRNA, but it's exclusively expressible genes
Answer
True
False
Question 8
Question
What is required to make the first RNA-DNA hybrid?
Image:
Hybrid (image/png)
Answer
dNTP's
Primer
Reverse Transcriptase
Question 9
Question
What are the two methods of degrading the RNA part?
Answer
Alkylisation (RNA is less stable)
RNA digestion through RNAase H
Boiling
Restriction enzymes
Question 10
Question
Which method was used to get the following DNA strand?
Image:
Alkali_Degrading (image/png)
Answer
Alkali degrading
Boiling
Shaking
RNAase H
Question 11
Question
What is required to get from the former to the latter?
Image:
Alkali_Degrading (image/png)
Answer
dNTP's
DNA Polymerase
Primer
Reverse transcriptase
Question 12
Question
What method was used to degrade the RNA into the following?
Image:
RNAase_H (image/png)
Answer
RNAase H
Alkylation
Boiling
Sonication
Question 13
Question
What is needed to get from the former to the latter?
Image:
Final_Product (image/png)
Answer
dNTP's
DNA Polymerase H
RNAase
rNTP's
Question 14
Question
When creating cDNA, a little information is always lost from the 3' end
Answer
True
False
Question 15
Question
How do we prevent this loss of information?
Answer
After degrading the RNA, add a homopolymer (polyC) tail to the 3 end
Using Terminal Transferase
Before degrading the DNA, degrade the Poly A tail
Question 16
Question
Then in second strand synthesis add ...
Answer
dNTP's
DNA polymerase
Oligo-dG primer
Question 17
Question
Enriching desired DNA means creating/finding more of it
Answer
True
False
Question 18
Question
Selective Hybridisation removes cDNA's common to more than one tissue
Answer
True
False
Question 19
Question
Tissue Specificity is useful if the gene is only expressed in a certain tissue
Answer
True
False
Question 20
Question
What is Normalisation?
Answer
Melt, anneal and isolate ssDNA
Use restriction enzymes to repeatdely cut and ligate DNA
Use DNA helicase to continually replicate DNA
Question 21
Question
How does Normalisation work?
Answer
Repetitive DNA binds to other repetitive DNA
Leaving only unique DNA single stranded
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