Explain the functional differences between a t-RNA and an m-RNA molecule

A tRNA molecule is one which carries an amino-acid and takes it to ribosomes to be inserted into an amino-acid sequence making a protein during the translation step of protein synthesis. An mRNA molecule is one which is made during the step of transcription and essentially contains the 3 codons which code for an amino acid. It resembles the whole sequence to make a protein and is essentially instructions from the DNA gene sequence on how to make a peptide chain.

CP

Related Biology A Level answers

All answers ▸

How are the lung's alveoli adapted for efficient diffusion?


A wheat farmer uses fertiliser on his crop for several months. During this time the pond at the end of the field becomes covered in a thin green film and starts to smell. What process is responsible for this and how does it occur?


What is the role of mitosis in organisms?


Describe the function of the enzymes DNA helicase and DNA polymerase.