Open Question
Match the amino acids to their appropriate 3-letter-code.
1. Gln 2. Ile 3. Glu 4. Trp 5. Asn 6. Leu
Asparagine ____ Glutamate ____ Leucine ____
Glutamine ____ Isoleucine ____ Tryptophan ____
1
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3. Amino Acids
Amino Acid Three Letter Code
Multiple Choice
In standard amino acid three-letter codes, which amino acid is represented by "TAC"?
A
There is no standard amino acid with the three-letter code "TAC".
B
Tyrosine (Tyr)
C
Tryptophan (Trp)
D
Threonine (Thr)
Verified step by step guidance1
Understand that the problem is asking about the standard three-letter codes used to represent amino acids. These codes are typically composed of three letters, each corresponding to a specific amino acid.
Recall or refer to the standard three-letter codes for amino acids: for example, Tyrosine is 'Tyr', Tryptophan is 'Trp', and Threonine is 'Thr'.
Note that 'TAC' is not a standard three-letter amino acid code. Instead, 'TAC' is a DNA codon sequence, not an amino acid abbreviation.
Recognize that the question might be testing the difference between codon sequences (which are nucleotide triplets in DNA or RNA) and amino acid three-letter codes (which are abbreviations for amino acids).
Conclude that since 'TAC' does not match any standard amino acid three-letter code, the correct understanding is that there is no amino acid represented by 'TAC' in the standard three-letter code system.
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