12 Questions
What is the primary mechanism by which lipids are transported in the blood?
Non-covalent association with proteins in lipoprotein particles
What is the approximate percentage of fatty acids carried bound to albumin in the blood?
2%
What is the role of apoproteins in lipoprotein particles?
To package non-water soluble lipids into a soluble form
What is the normal range of fatty acid levels in the blood?
1-5 mM
What is the significance of lipoproteins in medicine?
Disorders in their metabolism are associated with a number of important diseases
What is the origin of fatty acids that are bound to albumin in the blood?
Adipose tissue during lipolysis
What is the primary function of apoprotein molecules in lipoproteins?
To recognize cell surface receptors and activate enzymes
Which enzyme is responsible for releasing fatty acids from triacylglycerols in lipoproteins?
Lipoprotein Lipase
What is the main component of the hydrophobic core of a lipoprotein particle?
Triacylglycerol and cholesterol esters
What is the primary function of chylomicrons?
To transport dietary lipids from the intestine to tissues
What is the result of insulin increasing the synthesis of Lipoprotein Lipase?
Increased hydrolysis of triacylglycerols in lipoproteins
What is the function of Lecithin:Cholesterol Acyltransferase (LCAT) in lipoprotein metabolism?
To convert cholesterol to cholesterol ester
This quiz covers the transport of lipids in the blood, including triacylglycerols, fatty acids, cholesterol, and phospholipids. Learn how these insoluble lipids are carried in the plasma in association with proteins. Test your knowledge on lipoproteins and energy production by-products.
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