Unit 3-Molecular Genetics Lesson 5 19.0 Flashcards
1
Q
What do ribosomes consist of?
A
2 subunits (large and small)
2
Q
What are ribosomes composed of?
A
Proteins and rRNA
3
Q
How many tRNA binding sites do ribosomes have?
A
3
4
Q
What are the names of these 3 binding sites?
A
-A-site
-P-site
-E-site
5
Q
What occurs at the A-site?
A
It is where the incoming aminoacyl-tRNA carrying the next amino acid to be added binds to mRNA
6
Q
What occurs at the P-site?
A
where the tRNA, carrying the growing polypeptide chain is bound
7
Q
What occurs at the E-site?
A
where an exiting tRNA leaves the ribosome
