Final answer:
If a protein contains 200 peptide bonds, 200 molecules of water would be required to break it down into its amino acids.
Step-by-step explanation:
The number of water molecules required to break down a protein into its amino acids depends on the number of peptide bonds present in the protein. Each peptide bond is formed by a dehydration reaction, in which a water molecule is released. Since each peptide bond requires one molecule of water, the number of water molecules required to break down the protein is equal to the number of peptide bonds. Therefore, if a protein contains 200 peptide bonds, 200 molecules of water would be required to break it down into its amino acids.