16 Questions
Which type of lipids contains fatty acids?
Complex lipids
What is an example of a derived lipid?
Cholesterol
What is the primary function of bile acids?
To aid in the digestion of fats
Which of the following is NOT a type of lipid?
Nucleic acids
What is the function of phospholipases in lipid signaling pathways?
To hydrolyze phospholipids and release signaling molecules
What is the product of phospholipid hydrolysis by phospholipases in terms of signaling lipids?
Diacylglycerol and arachidonic acid
What is the function of bile acids in the intestine?
To act as detergents and emulsify dietary fats
What is the result of phospholipase C hydrolyzing phosphatidylinositol 4,5-bisphosphate (PIP2)?
The release of IP3 and diacylglycerol
What is the function of phospholipase A1 in phospholipid degradation?
To hydrolyze the ester bond at C-1 of glycerol
What is the function of vitamin E in the body?
To function as a biological antioxidant
What is the result of the complete hydrolysis of a glycerophospholipid?
The release of two fatty acids and a glycerol molecule
What is the function of phosphatidylinositol in the body?
To act as an intracellular signal that regulates cell structure and metabolism
What is the function of eicosanoids in the body?
To mediate many diverse biological effects, including inflammation, pain, and fever
What is the function of phospholipase D in phospholipid degradation?
To hydrolyze specific phosphoester bonds
What is the result of the enzymatic oxidation of arachidonic acid?
The formation of eicosanoids, including prostaglandins, thromboxanes, and leukotrienes
What is the function of vitamin K in the body?
To play a role in blood clotting
This quiz covers the structure and properties of different types of lipids, including fatty acids, storage lipids, membrane lipids, and signaling lipids, as well as their functions as cofactors, pigments, and vitamins.
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