Which of the Following DNA Repair Mechanisms Is Correctly Defined

question 39

Multiple Choice

Which of the following DNA repair mechanisms is correctly defined?

• A) mismatch repair system: corrects errors created from chemical modification of DNA
• B) photolyase: repairs cyclobutane dimers formed between adjacent cytosine residues
• C) base excision repair: uses DNA glycosylase to remove a damaged base by cleaving the glycosidic bond
• D) nucleotide excision repair: removes a single nucleotide by cutting the phosphodiester backbone
• E) none of the above

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Definitions:

Straight-line Method

A depreciation calculation technique that evenly spreads the loss in value of an asset across each year of its expected useful lifespan.

Double-declining-balance Method

A depreciation approach that speeds up the process by using a rate twice that of the typical straight-line method.

Sales Price

The amount of money charged for a product or service, or the sum a customer pays to purchase something.

Salvage Value

The presumed value for resale of an asset at life’s operational end.