Which Statement Concerning the Twenty Different $\alpha$ -Amino Acids Widely Found in Nature Is True?
A) Each

question 42

Multiple Choice

Which statement concerning the twenty different $\alpha$ -amino acids widely found in nature is true?

• A) Each \(\alpha\)-amino acid has a different number of carbon atoms.
• B) Each \(\alpha\)-amino acid has one amino (-NH₂)group.
• C) Each \(\alpha\)-amino acid has one carboxylic acid (-COOH)group.
• D) These \(\alpha\)-amino acids differ in the R groups attached to the \(\alpha\)-carbon.
• E) None of these \(\alpha\)-amino acids are aromatic compounds.

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Definitions:

Purity

The condition of being free from contaminants or pollutants; often used metaphorically to signify moral or ethical cleanliness.

Amplitude

The height or strength of a wave signal, often used in reference to sound or electromagnetic waves.

Panache

Distinctive and flamboyant flair or style.

Relative Size

A monocular cue for perception that allows us to determine how close objects are to an object of known size.