Biology 9700 · AS & A Level · Proteins

Proteins — practice question

The diagram represents the amino acid glutamic acid. What is the R group for glutamic acid?

  • A$\text{NH}_2$
  • B$\text{H}$
  • C$\text{COOH}$
  • D$\text{CH}_2-\text{CH}_2-\text{COOH}$

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