Answer:
cholesterol
Explanation:
Cholesterol is a sterol . It is biosynthesized by the animal cells and acts as an essential component of the structure of the animal cell membranes.
Cholesterol serves also as precursor for biosynthesis of the steroid hormones,vitamin D and bile acid. It is the principal sterol which is synthesized by all the animals.
Elevated levels of the cholesterol in the body's blood can lead to atherosclerosis that increases risk of heart attack by restricting the blood flow as it gets accumulated in the blood vessels.