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Multiple Choice
The peptide alanylglutamylglycylalanylleucine has how many amino acid residues?
A
4
B
5
C
3
D
6
Verified step by step guidance
1
Step 1: Understand the problem by identifying the peptide sequence provided: alanylglutamylglycylalanylleucine. Each segment corresponds to an amino acid residue.
Step 2: Break down the peptide name into individual amino acids. For example, 'alanyl' corresponds to alanine (Ala), 'glutamyl' corresponds to glutamic acid (Glu), 'glycyl' corresponds to glycine (Gly), 'alanyl' corresponds to alanine (Ala), and 'leucine' corresponds to leucine (Leu).
Step 3: Count the number of amino acid residues in the peptide. Each distinct amino acid name represents one residue.
Step 4: Verify the count by ensuring no amino acid is missed or double-counted. The peptide sequence should be linear, with each residue connected by peptide bonds.
Step 5: Conclude the total number of amino acid residues based on the count from Step 3. This is the final number of residues in the peptide.