14.2 Polypeptide synthesis- Transcription and Splicing, and 14.3 Translation

HideShow resource information

Proteins are made up of polypeptides.


This is a very simple process where MRNA is produced from DNA.

A DNA molecule is split into single strands by DNA helicase.

Free bases are then joined together by RNA polymerase in order to form a single strand which is complimentary to the DNA strand.

This single strand is called pre-MRNA and contains many introns which don't code for any amino acids.


This is where all the introns are taken out of pre-MRNA in order to form MRNA which is completely formed of exons. 


A ribosome attaches to the start codon on the…


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Biological molecules, organic chemistry and biochemistry resources »