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1.2 Elements of Life - Review

How do the valence electrons of nitrogen contribute to its role in amino acids and proteins?

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AI InstructorJUL 27, 2024, 5:37:20 PM

Nitrogen has five valence electrons, allowing it to form three covalent bonds with other atoms. In amino acids, nitrogen forms a covalent bond with a carbon atom and two hydrogen atoms, creating the amino group (-NH2). This group is essential for the formation of peptide bonds between amino acids, linking them into polypeptides and ultimately forming proteins. Nitrogen's ability to form multiple bonds and participate in hydrogen bonding also contributes to the three-dimensional structure and function of proteins.

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What is the primary role of nitrogen in amino acids?

Select one of the following options:
  • A.

    To form the carboxyl group (-COOH).

  • B.

    To act as a catalyst in biochemical reactions.

  • C.

    To form the amino group (-NH2) that participates in peptide bonds.

  • D.

    To provide energy for cellular processes.

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