What type of bond holds amino acids together in a protein structure?

• A. Hydrogen bond
• B. Covalent bond
• C. Ionic bond
• D. Peptide bond

Answer: (D)

Verified step by step guidance

1. Understand that proteins are made up of amino acids linked together in a chain.
2. Recognize that the bond formed between amino acids in a protein is a specific type of covalent bond.
3. Learn that this bond is called a peptide bond, which is formed during a dehydration synthesis reaction.
4. In a dehydration synthesis reaction, the carboxyl group of one amino acid reacts with the amino group of another, releasing a molecule of water.
5. The resulting bond, the peptide bond, is a strong covalent bond that links the amino acids together in the protein chain.