Final answer:
A discoidal nascent HDL is a form of mature HDL (high-density lipoprotein) that contains proteins and lipids, including phospholipids and cholesterol. The cholesterol in HDL is esterified by an enzyme to form a cholesterol ester.
Step-by-step explanation:
A discoidal nascent HDL refers to a form of mature HDL (high-density lipoprotein). HDL is composed of proteins and lipids, with the lipids mainly being phospholipids and cholesterol. The cholesterol in HDL is esterified by an enzyme called lecithin-cholesterol acyltransferase, which forms a cholesterol ester.