Understanding Codons and Amino Acids

What is a codon?

• A single DNA base.

• A group of three mRNA bases.

• A type of protein.

• An enzyme that builds DNA.

Which amino acid is coded for by the mRNA codon AUG?

• Leucine

• Valine

• Methionine

• Serine

What amino acid does the mRNA codon CCA code for?

• Histidine

• Glutamine

• Proline

• Arginine

What does the mRNA codon UAA signify?

• Phenylalanine

• Valine

• Start codon

• Stop codon