DNA structure and replication BIO12
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14 Terms
chromosomes are made up of
60% protein 40% nucleotide
gene
segment in DNA that codes a particular protein
nucleotide is the er and nucleic acid is the er
monomer and polymer
2 nucleic acid polymers are attached by…
hydrogen bonds
pyrimidines
CT, 1 ring
purines
AG, 2 rings
AT has _ H-bonds
2
CG has _ H-bonds
3
what does it mean when DNA is semi-conservative?
half of new DNA molecule is new and half is conserved from the original during DNA replication
DNA vs RNA
name, sugar, location in cell, shape, bases
complementary based pairing
ex AT CG allows DNA replicate to build other opposite strand with free nucleotides in cytoplasm
3 steps of DNA replication
unzipping
complementary based pairing
join adjacent nucleotides
name and function of the unzipping enzyme:
DNA helicase, disrupt H-bond
joining enzyme name and function:
DNA polymerase, attached sugar-phosphate backbone to DNA strand
Note 
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