Amino Acids and Classification

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MCAT Chemical and Physical Foundations of Biological Systems › Amino Acids and Classification

Questions 1 - 1
1

Which of the following amino acids are acidic?

I. Glutamate

II. Proline

III. Glycine

IV. Arginine

I only

I and IV

II and III

I, II and IV

Explanation

Glutamate (glutamic acid), is the only one of which that contain an acidic functional group (carboxylic acid). Arginine is basic while proline and glycine considered non-polar.

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