Do you some amino acids have more than one mRNA codon?

Most amino acids are indicated by more than one codon.

Explanation: Because there are only 20 different amino acids but 64 possible codons, most amino acids are indicated by more than one codon so the essential amino acids are coded by more than one codon, so that mutation does not change the amino acid sequence in the peptide chain.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.