DNA Repair

Which of following is the name of an enzyme mainly involved in excision repair?
Helicase
RNA Polymerase
Glycosylase
Ligase
What enzyme seals the distinct gap between the phosphodiester bond?
Helicase
RNA Polymerase
RNA Ligase
DNA Ligase
When does mismatch repair occur?
Before new DNA is made
Right after new DNA is made
Does not happen at all
During the time of synthesising new DNA
Incision from_________will be carried out on either side of the lesion to create a 27-29 nucleotide gap.
5' to 3'
5' to 4'
3' to 4'
3' to 5'
Pyrimidine dimers are the result of the exposure to what? (Hint: Main source for DNA damage)
UV (Ultraviolet Light)
Gamma Ray Light
Carbon Monoxide
X-Ray
If all the nicks get repaired, it means that what bonds have been broken?
Hydrogen Bond
Intracellular Bond
Phosphodiester Bond
Intercellular Bonding
Which of the following happens in deamination?
Cytosine converted to uracil
Thymine converted to uracil
Adenine converted to uracil
Nothing happen
Which of the following is false regarding double-stranded break repair?
There are 3 ways to repair
Two strands of DNA are broken
It doesn't rearrange the genome
All is true
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