Biology Ch.12 Sec. 1 and 2 Vocab

Question 1

Twisted-ladder shape of DNA, formed by two nucleotide strands twisted around each other

Answer 1

Double Helix

Question 2

Repeating subunit of chromatin fibers, consisting of DNA coiled around histones

Answer 2

Nucleosome

Question 3

Method of DNA replication in which parental strands separate, act as templates, and produce molecules of DNA with one parental DNA strand and one new DNA strand

Answer 3

Semiconservative replication

Question 4

Enzyme that catalyzes synthesis of new DNA molecules

Answer 4

DNA polymerase

Question 5

Short segment of DNA synthesized discontinuously in small segments in the 3’ to 5’ direction by DNA polymerase

Answer 5

Okazaki fragment

Question 6

Name all for nitrogenous bases

Answer 6

Adenine, Guanine, Cytosine, and Thymine