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Lipid Transport and Lipoproteins in Biochemistry

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Lipid Transport and Lipoproteins in Biochemistry

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Questions and Answers

Which of the following is the main function of apolipoproteins in lipoproteins?

To transport lipids in the body

To act as structural components of the lipoprotein particle

To regulate the activity of enzymes involved in lipid metabolism (correct)

To act as receptors for lipoprotein uptake by cells

What is the primary purpose of lipids being transported in the form of lipoproteins in the plasma?

To protect lipids from oxidative damage

To regulate the concentration of lipids in the blood

To facilitate the uptake of lipids by target tissues

To increase the solubility of lipids in the aqueous plasma environment (correct)

Which of the following is the primary method used to separate different types of lipoproteins?

Immunoaffinity

Centrifugation

Chromatography

Electrophoresis (correct)

Which type of lipoprotein is primarily responsible for the transport of dietary fats from the intestine to the liver?

Chylomicrons Signup and view all the answers

What is the primary structural difference between the apolipoproteins that are considered integral parts of the lipoprotein particle and those that are considered peripheral parts?

Integral apolipoproteins are more tightly bound to the lipoprotein particle, while peripheral apolipoproteins are more loosely associated Signup and view all the answers

Which type of lipoprotein is primarily responsible for the transport of cholesterol from the peripheral tissues to the liver for excretion?

HDL Signup and view all the answers

Which of the following is the main function of the phospholipid layer surrounding the core of a lipoprotein particle?

To increase the solubility of the lipids in the aqueous plasma environment Signup and view all the answers

Which of the following is the primary function of apo B-100 in the structure and function of low-density lipoproteins (LDL)?

To facilitate the uptake of LDL by target cells through the LDL receptor Signup and view all the answers