The unique - tertiary structure of the enzyme is what makes it unique - this in combination with the receptors at the active site confer specificity.
Answer: The receptor site is the location that a drug binds to, altering the function of a biomolecule.
Explanation:
The drug receptors site, are the sites where the sites where the drug molecules bind. Basically, a low number of receptors exists and the extent to which the molecules occupy their sites differ with the concentration of drug. The receptor site changes the conformation and function of the binding molecule of the drug.
Decomposition reaction occurs when chlorophyll breaks down to form new substances.