Question:
Which among the following amino acids has the lowest molar mass?
Which among the following amino acids has the lowest molar mass?
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When comparing the molar masses of amino acids, remember that the side chain (R group) heavily influences the molecular weight.
Updated On: Jan 27, 2026
- Alanine
- Aspartic acid
- Arginine
- Asparagine
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the amino acids.
Among the amino acids listed, alanine has the lowest molar mass. The molecular weights of the amino acids are: - Alanine: 89.1 g/mol - Aspartic acid: 133.1 g/mol - Arginine: 174.2 g/mol - Asparagine: 132.1 g/mol
Step 2: Conclusion.
The correct answer is (A) Alanine because it has the lowest molar mass compared to the other amino acids listed.
Among the amino acids listed, alanine has the lowest molar mass. The molecular weights of the amino acids are: - Alanine: 89.1 g/mol - Aspartic acid: 133.1 g/mol - Arginine: 174.2 g/mol - Asparagine: 132.1 g/mol
Step 2: Conclusion.
The correct answer is (A) Alanine because it has the lowest molar mass compared to the other amino acids listed.
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