Dna Flashcards
(17 cards)
Nucleotide
Phosphate, deoxyribose(sugar), nitrogen base
Center of ladder: sugar, base
Side of ladder: phosphate
Purines
Adenine
Guanine
Pyrimidines
Thymine
Cytosine
Weak bond/strong bond
A to T
One bond
G to C
2 bond
DNA is read
3-5
RNA is read
5-3
Helicase
Enzyme, unzip DNA
Erwin chargaff
Created complementary base pair rule
Chromotin
Loose DNA in nucleus
Polymerase
Used in transcription
Transcription initiation complex
Proteins (Transcription factor) & rna polymerase
Create pre mRNA
What must happen for mRNA to leave nucleus
Intons are removed, poly A tail is added at end (removed by exonuclease) and methyl cap at front
Start codon
Aug
Cytoplasm
Recycled nucleotides from RNA
Initiation, elongation, termination
Start, extend, stop
tRNA carries the amino acid into ribosomes to attach to other amino acids becoming polypeptides
Release factor is put at stop units ending translation
Ribosomes
E: tRNA leaves after releasing amino acid
P:
A: tRNA enters w/ A.A.
Central dogma
DNA blueprint (template strand) directing production