객관식
What products would result from the complete hydrolysis of the tripeptide Gly-Ala-Ser?
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3. Amino Acids
Amino Acid Groups
객관식
What is the name for the chemical group that is unique for each of the 20 amino acids?
A
Carboxyl group
B
R group (side chain)
C
Peptide bond
D
Amino group
검증된 단계별 안내1
Step 1: Begin by understanding the structure of amino acids. Each amino acid has a central carbon atom (α-carbon) bonded to four groups: an amino group (-NH₂), a carboxyl group (-COOH), a hydrogen atom, and a unique side chain (R group).
Step 2: Recognize that the amino group (-NH₂) and carboxyl group (-COOH) are common to all amino acids and are not unique to any specific amino acid.
Step 3: Identify the R group (side chain) as the chemical group that varies among the 20 amino acids. This variation in the R group determines the chemical properties and functions of each amino acid.
Step 4: Understand that the peptide bond is not a chemical group but rather a covalent bond formed between the amino group of one amino acid and the carboxyl group of another during protein synthesis.
Step 5: Conclude that the correct answer to the question is the R group (side chain), as it is the chemical group unique to each of the 20 amino acids.
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