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BIO NMDCAT Biological Importance of Water
nmdcat.online June 27, 2026

The principal role of water in a dehydration synthesis reaction, such as peptide bond formation, is that it is a

A. Catalyst that lowers the activation energy
B. Product released when a new covalent bond is formed
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C. Substrate that is split to provide energy
D. Allosteric activator of the ribosome

📝 Explanation

In condensation (dehydration) synthesis, the new covalent bond (e.g., C-N peptide bond) is formed by removing a hydroxyl group from one monomer and a hydrogen from another. The byproduct of this bond formation is a single water molecule.

📖 Additional Information

  • Catalyst that lowers the activation energy
  • Product released when a new covalent bond is formed
  • Substrate that is split to provide energy
  • Allosteric activator of the ribosome

In condensation (dehydration) synthesis, the new covalent bond (e.g., C-N peptide bond) is formed by removing a hydroxyl group from one monomer and a hydrogen from another. The byproduct of this bond formation is a single water molecule.

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