4.4 Flashcards
1
Q
codon def
A
a triplet that codes for a amino acid
2
Q
start amino acid
A
MET
3
Q
where does translation take place
A
the ribosome
4
Q
what are the 3 sites
A
A site
P site
E site
5
Q
A site function
A
matches tRNA to mRNA codon
6
Q
P site function
A
holds tRNA and growing polypeptide chain
7
Q
E site function
A
empty tRNA leaves ribosome
8
Q
mRNA function
A
contains code for amino acid sequence
9
Q
tRNA function
A
transfers amino acids and contains anti-codons
10
Q
rRNA function
A
facilitate the matching of mRNA and tRNA
11
Q
mutation def
A
change in DNA sequence
12
Q
2 main types of mutations
A
point and frameshift
13
Q
causes for mutations
A
DNA replication
Mutagens
viral infections
14
Q
point mutation def
A
substitution of a single base
15
Q
frameshift mutation
A
shift in reading frame
