Proteins and Amino Acids Structure
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Questions and Answers

Which of the following statements about amino acids is correct?

  • Amino acids contain a carboxylic acid group and an amino group. (correct)
  • Amino acids exist as neutral molecules in solution.
  • All amino acids have the same side chain group.
  • Amino acids do not have a hydrogen atom in their structure.

    • In proteins, amino acids are joined together by which type of bond?

  • Hydrogen bonds
  • Peptide bonds (correct)
  • Ionic bonds
  • Covalent bonds

    • What is the charge distribution of free amino acids in solution?

  • The amino group is positively charged, and the carboxylic group is negatively charged. (correct)
  • The amino group is negatively charged, and the carboxylic group is positively charged.
  • Both the amino group and the carboxylic group are negatively charged.
  • Both the amino group and the carboxylic group are positively charged.

    • What is the structure of polypeptide chains in proteins?

    <p>Linear polymers</p> Signup and view all the answers

    Which of the following is NOT a component of an amino acid?

    <p>Hydroxyl group</p> Signup and view all the answers

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