5.4 translation and mutations Flashcards
codon
every 3 letters in our mRNA that codes for 1 amino acid
start codon
AUG
code is all
life
serval codes for each amino acid
true
anticodon
3 base sequences pair with codons
order of translation
DNA,mRNA, Ribosome, site of protein synthesis
mRNA role
contains messages/code for the amino acid sequence
tRNA role
transfers amino acids, contains anticodons that pair with mRNA codons to put a.a in correct order
rRNA role
facilitates the matching of mRNA and tRNA
role of aminoacyl tRNA synthetase
puts animoacyl & tRNA together
a site
aminoacyl tRNA site matches the correct incoming tRNA to the next codon in the mRNA
p site
peptidyl tRNA site- holds tRNA carrying growing polypeptide chain
e site
exit site- empty tRNA leaves ribosome from exit site
point mutation
substitiuon of a sigle base
silent mutation
change in DNA but doesn’t change amnio acid