Questions On Protein Synthesis

C h e m g u id e – q u e s t i o n s

DNA: PROTEIN SYNTHESIS

You will need to refer to the table below (taken from the Chemguide page) showing the three-base

combinations used in messenger RNA chains to code for the various amino acids.

1. Messenger RNA (mRNA) produced from a gene on the original DNA can’t interact directly with

the amino acids needed to produce a protein chain. Instead it needs transfer RNA (tRNA) to help.

Each tRNA molecule can carry just one type of amino acid.

a) A very simplified diagram of the tRNA molecule which carries the amino acid methionine looks

like this:

Explain the significance of the anti-codon.

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