Question

What is the role of ribosomes in protein synthesis?
Please explain in steps

Answer 1

@emcrazy14

Answer 2

(d) 1 translation (in correct context) / genetic code used to make a sequence of amino acids /
AW ;
2 attach / assemble around / moves along / AW, mRNA ;
A ref. to bind mRNA / mRNA ‘lies within’ the ribosome
R mRNA enters ribosome
3 tRNA(s) carrying amino acid(s), bind to / AW, mRNA ;
A provides two sites for tRNAs carrying amino acids to bind to mRNA
4 binding / pairing / AW, between anticodon on tRNA to codon on mRNA ;
5 (catalyse) formation of peptide bond (to form polypeptide) ;
6 any further detail of translation ;
e.g. peptidyl transferase
ribosome moves along one codon at a time
start codon is AUG
stop codon in context
correct roles of P and A sites

Answer 3

this is the answer in marking scheme
i don't really get the sequence mb from here u can make it clear? @emcrazy14

Answer 4

Ribosomes are involved in translation.
mRNA binds to a ribosome. A tRNA molecule with base sequence (triplet code) complementary to the base sequence of mRNA brings the specific amino acid.
As such, different amino acids are brough by the tRNA and they are joined together by peptide bonds, until the stop codon is reached.

Answer 5

so i basically describe translation?

Answer 6

http://a2biology101.files.wordpress.com/2010/11/5-1-dna-and-protein-synthesis.pdf

Answer 7

Read under *TRANSLATION*. You'll understand the mechanism as the illustration is quite helpful too.

Answer 8

i know the whole process i just thought that ribosomes have some kind of role other then holding mrna