DNA

nucleotides

phosphate - pentose sugar - nitrogenous base

G base

guanine

T base

thymine

A base

adenine

C base

cytosine

U base

uracil

Purines

adenine and guanine

pyrimidines

thymine, cytosine, uracil

nucleosomes

DNA and histones

Hersey-Chase

used phages to find out DNA is the heridity molecule

Chargauff’s rule

found DNA structure

DNA replication

production of exact copies of DNA with identical base sequences

semi-conservative

half of the old DNA gets replicated

Helicase

unzips the DNA

SSB proteins

help hold single strands apart

gyrase

relaxes the supercoil

DNA primase

primer of DNA, puts little blocks in

DNA polymerase 3

binds together complimentary nucleotides

DNA polymerase 1

removes primer and fills in the gaps with nucleotides

DNA ligase

join/glue last fragments together