Amino Acids

A test on pages 48-49 of the OCR A A2 chemistry textbook

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1. What groups do alpha amino acids (those in the body) need to have?

  • A basic amine group and an acidic carboxyl group connected to the same carbon
  • A basic amine group and an acidic carboxyl group
  • A acidic amine group and a basic carboxyl group
  • A acidic amine group and a basic carboxyl group connected to the same carbon atom
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Other questions in this quiz

2. What is the simplest amino acid?

  • Alanine
  • Glycine
  • Serine
  • Proline

3. What are amino acids soluble in?

  • Bases
  • Everything
  • Acids and bases
  • Acids

4. What is the isoelectric point?

  • The pH value at which the amino acid exists as a zwitterion.
  • A dipolar ionic form of an amino acid.
  • The pH value at which a negative amino acid is formed.
  • The pH value at which a positive amino acid is formed.

5. What is a zwitterion?

  • A negatively charged form of the amino acid.
  • A positively charged form of the amino acid.
  • A dipolar ionic form of an amino acid that is formed by the donation of a hydrogen ion from the carboxyl group to the amino group.
  • The pH value at which the amino acid exists as an isoelectric ion.

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