
Concept explainers
(a)
Interpretation:
The R group of Alanine has to be drawn.
Concept Introduction:
In amino acids R group is the substituent group. If the substituent group contains a carboxylic group, the amino acid is acidic and if the substituent group contains an amino group, the amino acid is basic. If it contains an alkyl group, it is neutral amino acid.
(b)
Interpretation:
The R group of Histidine has to be drawn.
Concept Introduction:
In amino acids R group is the substituent group. If the substituent group contains a carboxylic group, the amino acid is acidic and if the substituent group contains an amino group, the amino acid is basic. If it contains an alkyl group, it is neutral amino acid.
(c)
Interpretation:
The R group of Methionine has to be drawn.
Concept Introduction:
In amino acids R group is the substituent group. If the substituent group contains a carboxylic group, the amino acid is acidic and if the substituent group contains an amino group, the amino acid is basic. If it contains an alkyl group, it is neutral amino acid.

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Chapter 15 Solutions
Student Study Guide for Silberberg Chemistry: The Molecular Nature of Matter and Change
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