What is the term for lipids that have both glycerol and fatty acids es...
- Lipids that have both glycerol and fatty acids esterified together are called triglycerides.
- They are also known as fats and oils based on their melting point.
What is the term for lipids that have both glycerol and fatty acids es...
The correct answer is c) Triglycerides.
Triglycerides are a type of lipid that consists of glycerol and fatty acids esterified together. They are the most common type of lipid found in the body and are an essential component of the diet. Triglycerides play a crucial role in energy storage, insulation, and cushioning of organs.
Triglyceride Structure:
Triglycerides are composed of three fatty acids attached to a glycerol molecule through ester bonds. Glycerol is a three-carbon alcohol with three hydroxyl groups (-OH), while fatty acids are long hydrocarbon chains with a carboxyl group (-COOH) at one end. The ester bond forms between the hydroxyl group of glycerol and the carboxyl group of the fatty acid.
Functions of Triglycerides:
1. Energy Storage: Triglycerides are the primary storage form of energy in the body. When the body requires energy, triglycerides can be broken down into glycerol and fatty acids through a process called lipolysis. The fatty acids can then be metabolized to produce ATP, the energy currency of cells.
2. Insulation: Triglycerides are an excellent insulator and help to maintain body temperature. They are stored in adipose tissue, which acts as an insulating layer beneath the skin.
3. Cushioning: Triglycerides provide cushioning and protection to organs by acting as a shock absorber. They are found in specialized adipose tissue surrounding organs, such as the kidneys and heart.
4. Hormone Production: Triglycerides are involved in the production of hormones. Certain hormones, such as estrogen and testosterone, are synthesized from cholesterol, which is a precursor molecule derived from triglycerides.
5. Absorption of Fat-Soluble Vitamins: Triglycerides play a crucial role in the absorption and transport of fat-soluble vitamins, including vitamins A, D, E, and K. These vitamins require the presence of dietary fats for their absorption in the intestines.
In conclusion, triglycerides are lipids that have both glycerol and fatty acids esterified together. They are essential for energy storage, insulation, cushioning, hormone production, and the absorption of fat-soluble vitamins.
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