Multiple Choice
What structural feature do all amino acids have in common?
29. Amino Acids
Proteins and Amino Acids
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What is the basic structure of an amino acid?
A
A central carbon atom bonded to two amino groups and two carboxyl groups
B
A central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable R group
C
A central carbon atom bonded to a phosphate group, a carboxyl group, and a variable R group
D
A central carbon atom bonded to a hydroxyl group, a carboxyl group, and a variable R group
Verified step by step guidance1
Begin by understanding the basic structure of an amino acid. An amino acid is an organic molecule that serves as the building block of proteins.
Identify the central carbon atom, known as the alpha carbon, which is the core of the amino acid structure.
Recognize the four groups attached to the alpha carbon: an amino group (\(\)), a carboxyl group (\(\)), a hydrogen atom (\(\)), and a variable R group.
Understand that the R group, or side chain, is what differentiates one amino acid from another, providing unique chemical properties.
Review the options given in the problem and identify the correct structure based on the description of the amino acid's components.
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