객관식
Amino acids are attached to their molecules by which of the following enzymes?
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29. Amino Acids
Proteins and Amino Acids
Multiple Choice
Which of the following amino acids is coded by only one codon?
A
Leucine
B
Methionine
C
Arginine
D
Serine
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검증된 단계별 안내1
Understand that a codon is a sequence of three nucleotides which together form a unit of genetic code in a DNA or RNA molecule.
Recognize that most amino acids are coded by more than one codon, a concept known as 'degeneracy' of the genetic code.
Identify that Methionine and Tryptophan are the only amino acids coded by a single codon. Methionine is coded by the codon AUG.
Recall that Leucine, Arginine, and Serine are coded by multiple codons, which means they do not fit the criteria of being coded by only one codon.
Conclude that Methionine is the amino acid coded by only one codon, which is AUG, making it unique among the options provided.
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