1.1.11 Cholesterol

Question 1

What does cholesterol combine with to make it soluble in water?

Answer 1

Combines with proteins to form lipoproteins

Question 2

How is LDL made?

Answer 2

The triglycerides from unsaturated fats combine with cholesterol and protein

Question 3

How does LDL cause high cholesterol levels?

Answer 3

It binds to receptor sites on cell membranes before being taken up. Excess LDL in the diet overloads the receptor sites, causing high cholesterol levels

Question 4

Where may the high amount cholesterol be deposited?

Answer 4

The cholesterol may be deposited in the artery walls, forming an atheroma

Question 5

What is the difference between LDL and HDL?

Answer 5

There is a higher percentage of protein in HDL. It is also made from saturated fats rather than unsaturated

Question 6

Why is HDL known as the good cholesterol?

Answer 6

HDL transport cholesterol from the body to the liver to be broken down. This lowers blood cholesterol levels.