Main Classes of Lipids
Triglycerides – Composition, Metabolism, and Their Role in Energy Storage
Triglycerides are essential lipids that function as energy storage molecules, composed of glycerol and three fatty acid chains. They undergo metabolism to provide energy when needed.
Main Classes of Lipids
Triglycerides – Composition, Metabolism, and Their Role in Energy Storage
Triglycerides are the most common type of lipid found in the body and play a crucial role in energy storage and metabolism. They are composed of glycerol and three fatty acid chains, which vary in length and saturation.
Composition of Triglycerides
Triglycerides consist of a glycerol backbone esterified to three fatty acids. The fatty acid composition determines the physical properties of the triglyceride, such as its melting point and function.
Metabolism of Triglycerides
Triglycerides undergo digestion in the gastrointestinal tract, where lipases hydrolyze them into free fatty acids and monoglycerides for absorption. In the bloodstream, they are transported via lipoproteins and stored in adipose tissue.
Role in Energy Storage
Triglycerides serve as a primary energy reserve. When energy demand increases, they are hydrolyzed into glycerol and free fatty acids, which are oxidized to generate ATP in cellular respiration.
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