DEBio 15 Codon Chart Practice

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid or a stop signal during protein synthesis.

Front

What does the codon AUG signify?

Back

AUG is the start codon that signals the beginning of protein synthesis and codes for the amino acid methionine.

Front

What is the role of the codon chart?

Back

The codon chart is a reference tool that shows the relationship between codons and the amino acids they code for, helping to translate mRNA sequences into amino acid sequences.

Front

What amino acid does the codon UUA code for?

Back

UUA codes for the amino acid leucine.

Front

What are stop codons?

Back

Stop codons (UAA, UAG, UGA) signal the termination of protein synthesis and do not code for any amino acid.

Front

Which codon does NOT result in a stop signal?

Back

UGG does not result in a stop signal; it codes for the amino acid tryptophan.

Front

What amino acid is coded by the codon GAU?

Back

GAU codes for the amino acid aspartic acid.

Front

What is the significance of the sequence AUG AGA ACG CCG?

Back

This sequence translates to the amino acids methionine - arginine - threonine - proline.

Front

How do you read a codon chart?

Back

To read a codon chart, locate the first nucleotide in the left column, the second nucleotide in the top row, and the third nucleotide in the right column to find the corresponding amino acid.

Front

What is the amino acid sequence for the codons UAU ACG GCU CCA?

Back

The sequence translates to tyrosine - threonine - alanine - proline.