Types of RNA T3 W1

3 types of RNA

Messenger RNA (mRNA), Transfer RNA (tRNA) and ribosomal RNA (rRNA)

Where is mRNA made

Nucleus through transcription

mRNA function

Takes genetic code to make proteins from the nucleus to the ribosomes.

How much of the ribosome mass does rRNA take up

60% (40% = protein)

rRNA function

The rRNA ensures the correct alignment of mRNA, tRNA and ribosome

It also has an enzymatic role in the formation of peptide bonds between amino acids.

tRNA structure

Small molecule of RNA (70-90 nucleotides).

Folded ‘clover-leaf’ structure

tRNA function

The role of transfer RNA is to retrieve the correct amino acid from the cytoplasm to the ribosome.