<prompt> Answer this question truthfullyWhat is the name of the enzyme that catalyzes the conversion of angiotensin I to angiotensin II?  <response>: <reason> The name of the enzyme that catalyzes the conversion of angiotensin I to angiotensin II is angiotensin-converting enzyme ACE. Angiotensin I is a hormone that is produced by the liver and is converted to angiotensin II in the lungs by ACE. Angiotensin II is a potent vasoconstrictor that can cause an increase in blood pressure and is involved in the regulation of fluid and electrolyte balance in the body. ACE inhibitors are a class of medications that are commonly used to treat hypertension high blood pressure by blocking the activity of ACE and preventing the conversion of angiotensin I to angiotensin II. 