Arachidonic acid, released during aea hydrolysis, is not a precursor for the synthesis of what class of molecules?
a. prostaglandins
b. catecholamines
c. thromboxanes
d. phospholipids
The correct answer is b. catecholamines. Catecholamines are monoamines derived from the amino acid tyrosine. Arachidonic acid is a carboxylic acid present in the phospholipids that is a precursor for different molecules. The enzymes cyclooxygenases concert this acid into prostaglandins and then to thromboxanes.
