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DNA Repair Mechanisms Quiz

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Questions and Answers

What is the main focus of DNA repair mechanisms discussed in the text?

Reversal of DNA base alterations

Base excision repair

Repair of double-strand breaks (correct)

Correction of replication errors

Which repair mechanism can fix damaged bases or nucleotides specifically?

Mismatch repair

Double-strand break repair

Base excision repair (correct)

Homologous recombination

In DNA repair, what is the purpose of the SOS system?

Correcting mismatched bases

Reversing deaminated bases

Reversing alkylated bases

Error-prone repairs in case of extensive damage (correct)

Which mechanism can repair errors that occur during DNA replication?

Mismatch repair Signup and view all the answers

What distinguishes methyl-directed mismatch repair in DNA repair mechanisms?

It can discern parental from newly synthesized DNA strands Signup and view all the answers

Which system is involved in fixing breaks that occur in both strands of the DNA helix?

Microhomology-mediated end-joining (MMEJ) Signup and view all the answers

What is the outcome of nonhomologous end-joining mechanisms used to repair double-strand breaks?

Introducing deletions or insertions during repair Signup and view all the answers

DNA Repair Mechanisms Quiz

Choose a study mode

Podcast

Questions and Answers

What is the main focus of DNA repair mechanisms discussed in the text?

Which repair mechanism can fix damaged bases or nucleotides specifically?

In DNA repair, what is the purpose of the SOS system?

Which mechanism can repair errors that occur during DNA replication?

What distinguishes methyl-directed mismatch repair in DNA repair mechanisms?

Which system is involved in fixing breaks that occur in both strands of the DNA helix?

What is the outcome of nonhomologous end-joining mechanisms used to repair double-strand breaks?

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