Benzopyrene, a component of cigarette smoke, can induce DNA mutations by
A) converting cytosine to uracil by deamination.
B) converting an amino group on cytosine into a keto group.
C) adding a chemical to guanine, making it unavailable for base pairing.
D) changing bases to forms that are unrecognizable by DNA polymerase.
E) breaking the sugar-phosphate backbone of DNA.

Question

Quizplus · Accepted Answer

Benzopyrene, a component of cigarette smoke, can induce DNA mutations by adding a chemical group to guanine, which interferes with its ability to form base pairs. This process is a form of chemical modification rather than the mechanisms described in the other options.

Benzopyrene, a Component of Cigarette Smoke, Can Induce DNA Mutations