6.2 DNA Structure & Function

Question 1

transformation

Answer 1

a change in a genotype or phenotype caused by the direct uptake of genetic material by a cell

Question 2

bacteriophage

Answer 2

a virus that infects bacteria

Question 3

purine

Answer 3

a class of nitrogenous bases with a double-ring structure

(e.g adenine and guanine)

Question 4

pyrimidine

Answer 4

a class of nitrogenous bases with a single-ring structure

(e.g. thymine and cytosine)

Question 5

complementary base pairing

Answer 5

the chemical tendency of adenine to form hydrogen bonds with thymine, and cytosine to form hydrogen bonds with guanine