$\text{Which of the following codons codes for the amino acid serine?}$

The first amino acid in the pentapeptide of Figure 26.50, Pyr, is not one of the 20 amino acids in Table 26.1. Based on the following structure of Pyr, from which natural amino acid is it likely derived?

How many aminoacyl-$t-\mathrm{RNA}$ synthetases are present for each of the $20$ common amino acids?

In a given sample analysis, which amino acid is present in higher amounts than $\mathrm{glycine}$?

$Which\; of\; the\; following\; codons\; correspond\; to\; the\; amino\; acid\; lysine?$

Which of the following is a set of $mRNA$ codons that code for the amino acid arginine?

Which of the following single base changes in the $mRNA$ codon would result in alanine being substituted for threonine?

Which amino acid is encoded by the mRNA codon $UUA$?

Which amino acid does the codon $ACC$ code for?