WorksheetsDNA Repair SI
Total questions: 25
Worksheet time: 17mins
What type of repair pathway would repair replication errors?
Base Excision Repair
Nucleotide Excision Repair
Mismatch Repair
Homologous Recombination
What type of repair pathway would repair oxidative damage?
Base Excision Repair
Nucleotide Excision Repair
Mismatch Repair
Homologous Recombination
What type of repair pathway would repair UV-induced damage?
Base Excision Repair
Nucleotide Excision Repair
Mismatch Repair
Homologous Recombination
Who am I? I recognize a damaged nucleotide(s) that was damaged by oxidative damaged or alkylation & will flip the base out to cleave it out
DNA glycosylase
XPC
EXO1
APE1
Who am I? I recognize abasic sites and cleave the abasic site to remove the sugar phosphate group & create a nucleotide gap
OGG1
XPC
EXO1
APE1
Who am I? I bind the bulky lesion after it has been recognized by other proteins (I am sorry I know this one is hard but if you can draw out this pathway you will be so set)
XPA
XPG
XPF
XPC
Choose all that are a source of DSBs (double-strand breaks)
Ionizing radiation
ROS
Replication fork collapse
CRISPR-Cas9 system
If a cancer patient takes cisplatin (anti-tumor drug), what pathways will begin repair in the presence of interstrand crosslinks that are induced? (Multiple answers)
NER
BER
Translesion synthesis (TLS)
HR
Who am I? I cap the ends of DSB for protection
Ku
MRN
RAD51
BRCA2
Who am I? I sense double-stranded DNA damage such as a DSB
ATM
ATR
OGG1
APE1
Who am I? I cause end resection with BRCA1 in HR
BRCA2
RAD51
MRN
Ku
What pathway would be triggered by cisplatin (anti-tumor drug)
BER
HR
NHEJ
MMR
What DSB repair would likely occur during the same cycle of DNA replication (S phase)?
HR
NHEJ
What DSB repair would likely occur during G1?
HR
NHEJ
Who am I? I recognize single mismatched base pairs
MSH2/6
MSH2/3
EXO1
APE1
If you have a BRCA1/2 mutation, what repair pathway would you be deficient in?
NHEJ
BER
NER
HR
If you have a XPC mutation, what repair pathway would you be deficient in?
NHEJ
BER
NER
HR
If you had hereditary nonpolyposis colon cancer and you know it was due to a germline mutation, what do you likely have a deficiency in?
MMR
NER
BER
HR
What type of DNA damage is typically repaired by mismatch repair (MMR)?
Thymine dimers
Base mismatches after replication
Double-strand breaks
Oxidized bases
Ku70/Ku80 heterodimer is primarily involved in which pathway?
NER
BER
NHEJ
HR
A patient has a mutation in XPA. Which repair pathway is defective?
NER
BER
HR
NHEJ
Oxidative damage like 8-oxoG forms during replication. Which repair fixes it?
NER
BER
NHEJ
HR
UV light causes pyrimidine dimers, repaired by:
BER
NER
NHEJ
HR
NHEJ is generally considered
Error-free
Error-prone
Only for S-phase
Only for M-phase
Holliday junction resolution occurs in:
NER
HR
BER
MMR
