The peptide bond is __________.

• A. a hydrogen bond joining amino acids together to form a polypeptide
• B. a covalent bond joining simple sugars together to form a polypeptide
• C. a hydrogen bond joining nucleotides together to form a nucleic acid
• D. a covalent bond joining nucleotides together to form a nucleic acid
• E. a covalent bond joining amino acids together to form a polypeptide

Answer: (E)

Verified step by step guidance

1. Understand the definition of a peptide bond: A peptide bond is a specific type of covalent bond that forms between two amino acids.
2. Recognize the components involved in forming a peptide bond: It involves the carboxyl group of one amino acid and the amino group of another.
3. Identify the process of peptide bond formation: This bond is formed through a dehydration synthesis reaction, where a molecule of water is removed.
4. Clarify the role of peptide bonds in protein structure: Peptide bonds link amino acids together in a chain, forming the primary structure of proteins, known as polypeptides.
5. Review the options given and match the correct description: The peptide bond is a covalent bond joining amino acids together to form a polypeptide.