B.3 Structure and Function of DNA in cells

consists of three parts; a 5-carbon sugar, a phosphate group, and a nitrogenous base

• nucleotide

• deoxyribose

• nitrogenous base

• purine

the 5-carbon sugar in a DNA nucleotide

• nucleotide

• deoxyribose

• nitrogenous base

• purine

contains nitrogen atoms and carbon atoms and is a base (opposite of an acid)

• nucleotide

• deoxyribose

• nitrogenous base

• purine

nitrogenous bases with a double ring of carbon, ie. adenine and guanine

• nucleotide

• deoxyribose

• nitrogenous base

• purine

nitrogenous bases with a single ring of carbon, ie. cytosine, thymine, and uracil

• pyrimidine

• base-pairing rule

• complementary base pair

• base sequence

in DNA, cytosine on one strand pairs with guanine on the the opposite strand and adenine on one strand pairs with thymine on the opposite strand

• pyrimidine

• base-pairing rule

• complementary base pair

• base sequence

one purine with one pyrimidine (according to the base pairing rule)

• pyrimidine

• base-pairing rule

• complementary base pair

• base sequence

the order of nitrogenous bases on a chain of DNA

• pyrimidine

• base-pairing rule

• complementary base pair

• base sequence

the process by which DNA is copied in a cell before a cell divides by mitosis, meiosis, or binary fission.

• DNA replication

• helicase

• replication fork

• DNA polymerase

enzyme that separates complementary DNA strands

• DNA replication

• helicase

• replication fork

• DNA polymerase