Protein Synthesis Flashcards
1
Q
What is definition of gene expression in eukaryotic cell?
A
Generalised flow of information
2
Q
How many different combinations of codons are there in genetic code?
A
Triplet codons
4 possible bases
4^3= 64 codons
3
Q
What is the P site?
A
Peptidyl-tRNA binding site
It holds tRNA carrying growing polypeptide chain
4
Q
What is A site?
A
Aminoacyl tRNA binding site
It holds tRNA carrying next amino acid to be added to chain
5
Q
What is E site?
A
Exit site
Discharged tRNAs leave ribosome here
6
Q
What are 3 stages of protein synthesis?
A
Initiation
Elongation
Termination
7
Q
What is the difference between bacterial + eukaryotic ribosomes?
A
Large subunit= contains 2 different RNA in prokaryotic ribosome
Large subunit= contains 3 different RNA in eukaryotic ribosome
