In Photoreactivation,DNA Damage Caused by UV Light Is Reversed by DNA

question 88

Multiple Choice

In photoreactivation,DNA damage caused by UV light is reversed by DNA photolyase which

• A)is activated by UV light to form a complex.
• B)removes nicks in the DNA backbone.
• C)forms a complex with thymine dimers and the complex absorbs visible light which reverses the dimerization.
• D)binds to the adenine bases opposite the thymine dimer.
• E)All of the above.

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