Which one of the following is least likely to be an amino acid obtained by the hydrolysis of protein in food?
A - VCE - SSCE Chemistry - Question 11 - 2006 - Paper 1
Question 11
Which one of the following is least likely to be an amino acid obtained by the hydrolysis of protein in food?
A. H₂NCH(CH₃)COOH
B. H₂NCH(CH₂)SHCOOH
C. H₂NCH(CH₂)C... show full transcript
Worked Solution & Example Answer:Which one of the following is least likely to be an amino acid obtained by the hydrolysis of protein in food?
A - VCE - SSCE Chemistry - Question 11 - 2006 - Paper 1
Step 1
A. H₂NCH(CH₃)COOH
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Answer
This compound is a typical amino acid with an amino group (H₂N), a carboxylic acid group (COOH), and a side chain (CH₃). Thus, it is likely to be obtained by hydrolysis.
Step 2
B. H₂NCH(CH₂)SHCOOH
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Answer
This structure contains a thiol group (SH) and is also plausible as an amino acid formed from hydrolysis.
Step 3
C. H₂NCH(CH₂)COOH
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Answer
This compound lacks a unique side chain and may be a variant of a simple amino acid but is the least likely to be obtained through hydrolysis.
Step 4
D. H₂NCH(CH₂,COOH)COOH
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Answer
This structure indicates multiple carboxylic acid groups, which is unusual for standard amino acids. Hence, it is least likely to be formed from protein hydrolysis.
