Question

suppose the following amino acid chain was created based on a students transcription and translation: tyr - leu - pro - met. in the chain, which data show a possible source of error? explain the error. the position of methionine (met) in the middle of the chain is a possible source of error. normally, methionine is the start - codon amino acid and should be at the beginning of the polypeptide chain, indicating an error in transcription or translation processes. what information did you include in your response? check all that apply. the position of met seems incorrect. the amino acid sequences of all proteins begin with met because it is the amino acid that is attached to the anticodon for the aug start codon. it looks like the student might have worked in a backward direction for transcription.

Explanation:

Methionine (Met) is the start - codon amino acid and usually begins polypeptide chains. Here, it's in the middle, indicating a possible error in transcription or translation. The position being incorrect is a valid observation. Also, proteins typically start with Met due to its attachment to the AUG start - codon anticodon. Working backward in transcription could be a reason for the incorrect placement.

Answer:

The position of Met seems incorrect.
The amino acid sequences of all proteins begin with Met because it is the amino acid that is attached to the anticodon for the AUG start codon.
It looks like the student might have worked in a backward direction for transcription.