Lipids Flashcards
What are lipids?
Lipids are a diverse group of hydrophobic organic molecules that include fats, oils, and steroids.
What is the primary function of lipids in the body?
The primary function of lipids is to store energy, provide insulation, and form cell membranes.
What are the main types of lipoproteins?
The main types of lipoproteins are Low-Density Lipoproteins (LDL), High-Density Lipoproteins (HDL), and Very Low-Density Lipoproteins (VLDL).
True or False: LDL is known as ‘good cholesterol’.
False: LDL is known as ‘bad cholesterol’.
What is the primary role of HDL in the body?
The primary role of HDL is to transport cholesterol from the body’s tissues back to the liver for excretion or re-utilization.
Fill in the blank: VLDL primarily carries ________ to tissues.
triglycerides
What is the relationship between LDL levels and heart disease risk?
Higher levels of LDL are associated with an increased risk of heart disease.
Multiple choice: Which lipoprotein is often referred to as ‘bad cholesterol’? A) HDL B) LDL C) VLDL
B) LDL
What is the key difference between HDL and LDL?
HDL carries cholesterol away from arteries to the liver, while LDL carries cholesterol to the arteries.
True or False: VLDL is primarily composed of protein.
False: VLDL is primarily composed of triglycerides.
What does a high level of HDL indicate?
A high level of HDL indicates a lower risk of heart disease.
Fill in the blank: The main component of lipoproteins is ________.
lipids
What is the function of apolipoproteins in lipoproteins?
Apolipoproteins serve as structural components and help in the transport and metabolism of lipoproteins.
Multiple choice: Which of the following is a risk factor for high LDL levels? A) Regular exercise B) High saturated fat diet C) Low sugar intake
B) High saturated fat diet
What is the role of lipoprotein lipase?
Lipoprotein lipase breaks down triglycerides in lipoproteins into free fatty acids for tissue uptake.
True or False: All lipids are soluble in water.
False: Lipids are generally insoluble in water.
What is the typical range for total cholesterol levels in adults?
The typical range for total cholesterol levels in adults is less than 200 mg/dL.
Fill in the blank: ________ are the building blocks of triglycerides.
Fatty acids
What is a common method for measuring lipid levels in the blood?
A common method for measuring lipid levels is a lipid panel or lipid profile blood test.
Multiple choice: Which lipoprotein is primarily responsible for transporting cholesterol to tissues? A) HDL B) LDL C) Chylomicrons
B) LDL
What lifestyle changes can help lower LDL cholesterol levels?
Lifestyle changes include a healthy diet, regular exercise, and avoiding tobacco smoke.
True or False: High levels of triglycerides can also increase the risk of heart disease.
True
Fill in the blank: The liver produces ________ to help transport cholesterol.
VLDL
What is the significance of the ratio of LDL to HDL?
A lower ratio of LDL to HDL is associated with a lower risk of cardiovascular disease.
What dietary factors can increase HDL levels?
Healthy fats, such as those found in olive oil, avocados, and fatty fish, can help increase HDL levels.
