5-Bromouracil is structurally similar to a nucleobase and can be inserted into the DNA and perform base- pairing. 5-Bromouracil is a base ________ for the base thymine.

Which of the following statements about mutagens and carcinogens is true?

Which of the following wavelengths of light cause Thymine dimer mutations?

Acquired antibiotic resistance can include all of the following except:

a. altering an enzyme that a given drug may target.

b. making endospores.

c. altering a point of entry for a drug.

d. making enzymes that inactivate a drug.

e. increasing the number of efflux pumps that are active in a cell.

Label the following as a biological, chemical, or physical mutagen:

UV radiation:

Transposons:

Cigarette smoke:

Viruses:

X-rays:

Plasmids:

Alcohol:

Which of the following statements about mutagens and carcinogens is true?