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cellbio 4 1

history + dna structure

TermDefinition
Dr. Miescher war, saved pus bandages to study, discovered cells
Dr. Griffith trying to make pneumonia vaccine, discovered smooth/rough pneumonia
smooth pneumonia kills you dead, dead smooth + live rough still kills you
rough pneumonia harmless
Dr. Avery discovered enzymes, proteases/nucleases, mixed with smooth/rough pneu
nuclease break down nucleic acids
protease break down proteins
dead smooth + live rough + nucleases nucleic acids are control center
dna ladder legs phosphate sugars
dna ladder rungs nitrogen base pairs
purines adenine and guanine, larger/double-ringed
pyrimidines thymine and cytosine, smaller/single-ringed
adenine/thymine 2 places for H to bind
guanine/cytosine 3 places for H to bind
dna helicase unzips dna to make 2 half ladders
dna polymerase turns 2 half ladders into 2 full ladders
semi-conservative replication 1 dna strand into 2- each is half old half new
P53 checks if everything is copied correctly
nucleotides phosphate group and a nitrogen base
5 prime sites where a nucleotide attaches to another
3 prime sites where a nucleotide is attached to by another
replication forks where helicase unzips a chunk before moving on to next fork
okazaki fragments bottom rung copied in smaller fragments because of anti-parallel
topoisomerase relaxes coil so helicase can get up in ther
single-stranded binding proteins keeps dna open cause it wants to shut itself so bad
primase helps polymerase attach
ligase sticks okazaki fragments back together
Created by: user-1862257
Popular Genetics sets

 

 



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