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Biotechnology and Biomedical Engineering
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Molecular Biology Virtual Lab II
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Ligation ( Using T4 DNA Ligase)
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Ligation ( Using T4 DNA Ligase)
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Theory
Procedure
Self Evaluation
Animation
Assignment
Reference
Feedback
1)
In molecular biology, DNA ligase is a special type of ligase that can link together two ________ strands that have double-stranded break
RNA
DNA
Protein
Gene
2)
The leaving group in an E. coli DNA ligase mediated reaction is
NAD
NMN
ATP
AMP
3)
DNA ligases are used with ___________ to insert DNA fragments into plasmids
DNA Polymerase
DNA Helicase
Restriction enzymes
All the above
4)
The common commercially available DNA ligases were originally discovered in bacteriophage ________
T2
T7
T4
T3
5)
If the ambient temperature exceeds Tm, homologous pairing of the sticky ends will not occur because the high temperature disrupts ________
Hydrogen bond
Ionic bond
Covalent bond
Phosphodiester bond
6)
A DNA strand has the following bases: G T C A G C A. What are the bases on its complimentary strand?
A A G C C A T
T T C G G T A
A C C G A A C
C A G T C G T
7)
T4 DNA ligase is similar to E. coli DNA ligase, except that ATP is a cofactor rather than NAD. Besides ligated DNA, another product is
pyrophosphate
phosphate
NMN
NAD
8)
In order to produce a DNA fragment that can be inserted into the DNA of a second organism one would need to
find a virus that could serve as a vector for transfer of the donor DNA
create a compatible DNA segment from an mRNA template
cut the DNA of the donor and recipient cells with the same restriction enzyme
be sure both donor and recipient DNA were prokaryotic or eukaryotic
9)
Cuts in DNA are sealed with
restriction enzymes
reverse transcriptase
polymerase
ligases
10)
Sticky ends are created by
cutting DNA so that there are short, single strands at each end
cutting the DNA fragment in several places
adding polymerase to the end of the DNA fragment
adding ligase to the end of the DNA fragment
11)
The deliberate modifications of an organism's genetic information by directly changing its nucleic acid content is
pharmacogenomics
genetic engineering
population genetics
population dynamics
12)
Vectors are
molecules that are able to covalently bond to and carry foreign DNA into cells
molecules that degrade nucleic acids
molecules that protect host cells from invasion by foreign DNA
both 1 & 2
Cite this Simulator:
vlab.amrita.edu,. (2011). Ligation ( Using T4 DNA Ligase). Retrieved 10 October 2024, from vlab.amrita.edu/?sub=3&brch=186&sim=781&cnt=3
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