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Questions and Answers
The direct reversal DNA repair mechanism involves the use of a template to repair DNA damage.
The direct reversal DNA repair mechanism involves the use of a template to repair DNA damage.
False (B)
Photoreactivation is a direct reversal DNA repair mechanism that can reverse the formation of pyrimidine dimers induced by UV light.
Photoreactivation is a direct reversal DNA repair mechanism that can reverse the formation of pyrimidine dimers induced by UV light.
True (A)
Methylation of guanine bases results in a DNA structure complimentary to cytosine.
Methylation of guanine bases results in a DNA structure complimentary to cytosine.
False (B)
Photo reactivating enzyme requires the presence of light for its repair function.
Photo reactivating enzyme requires the presence of light for its repair function.
Direct reversal through methylation can reverse the alkylation of guanine at O6 position.
Direct reversal through methylation can reverse the alkylation of guanine at O6 position.
Photo reactivation through destruction of abnormal covalent bonds occurs in humans.
Photo reactivation through destruction of abnormal covalent bonds occurs in humans.
Direct reversal DNA repair mechanism is mainly classified into photoreactivation and methylation.
Direct reversal DNA repair mechanism is mainly classified into photoreactivation and methylation.
The direct reversal mechanism involves replacing damaged nucleotide bases.
The direct reversal mechanism involves replacing damaged nucleotide bases.
Methyl guanine methyl transferase (MGMT) restores the original guanine by transferring the methylation product to its active site.
Methyl guanine methyl transferase (MGMT) restores the original guanine by transferring the methylation product to its active site.
Direct reversal mechanisms are not impacted by environmental factors.
Direct reversal mechanisms are not impacted by environmental factors.
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