Question

1. In eukaryotes, which DNA polymerase is primarily responsible for filling in the gaps in the DNA generated during base excision repair?  

DNA polymerase α

DNA polymerase β

DNA polymerase γ

DNA polymerase ö

DNA polymerase μ

2. High energy electromagnetic radiation includes which of the following?  

ultraviolet light

x-rays

gamma rays

two of the above

all three of the above

3. Which of the following types of damage to DNA cannot be caused by x-rays and gamma rays?  

deletions

duplications

insertions

translocations

inversions

4. Error-prone DNA polymerases catalyze __________ DNA synthesis.  

translesion

transtrand

single-stranded

double-stranded

none of the above

5. Synthesis of which of the following proteins is not induced by the SOS signal?  

DNA polymerase I

DNA polymerase II

DNA polymerase IV

DNA polymerase V

none of the above

6. N-glycosyl bond cleavage is the first step of:  

Base excision repair

Mismatch repair

Nucleotide excision repair

SOS response

photoreactivation

Answer 1

1.DNA polymerase β is used to fill in the gaps

2.two of the above as x rays and gamma rays are electromagnetic radiations not UV rays

3.Transloctions as both of them cannot do this.

4.double-stranded DNA synthesis as it converts a dna with 2 strands into one.