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Questions and Answers
What is the function of lipids in serving as a fuel?
What is the function of lipids in serving as a fuel?
- Storing fat in specialized cells (correct)
- Acting as mechanical and thermal insulators
- Supplying the body with essential fatty acids
- Serving as insulating material in subcutaneous tissues
Which type of lipids serves as building blocks in cell membranes?
Which type of lipids serves as building blocks in cell membranes?
- Phospholipids bi-layers (correct)
- Waxes
- Neutral lipids
- Compound or conjugated lipids
What is the function of lipids in supporting vital organs?
What is the function of lipids in supporting vital organs?
- Serving as mechanical and electrical insulators
- Acting as a pad for kidney and liver (correct)
- Serving as hormones and mediators
- Supplying the body with essential fatty acids
Which type of lipids are esters of fatty acids with alcohols?
Which type of lipids are esters of fatty acids with alcohols?
What other groups do compound or conjugated lipids contain in addition to alcohols and fatty acids?
What other groups do compound or conjugated lipids contain in addition to alcohols and fatty acids?
What is the primary property of most lipids mentioned in the text?
What is the primary property of most lipids mentioned in the text?
What is the main component of the myelin sheath of the nerves?
What is the main component of the myelin sheath of the nerves?
Which group of fatty acids are formed de novo in the animal body mainly from carbohydrates?
Which group of fatty acids are formed de novo in the animal body mainly from carbohydrates?
What category does lauric acid belong to?
What category does lauric acid belong to?
Which type of fatty acids deficiency can produce dermatitis, fatty liver, and impaired growth and reproduction?
Which type of fatty acids deficiency can produce dermatitis, fatty liver, and impaired growth and reproduction?
What is obtained from the hydrolysis of fats?
What is obtained from the hydrolysis of fats?
What is the main function of neutral fats stored in specialized cells known as adipocytes?
What is the main function of neutral fats stored in specialized cells known as adipocytes?
Which type of lipids serves as the building blocks in cell membranes?
Which type of lipids serves as the building blocks in cell membranes?
Which group of lipids are insoluble in water and soluble in nonpolar solvents, such as benzene?
Which group of lipids are insoluble in water and soluble in nonpolar solvents, such as benzene?
What is the primary function of waxes among the different types of lipids?
What is the primary function of waxes among the different types of lipids?
Which component of the nerves is made up of phospholipids?
Which component of the nerves is made up of phospholipids?
What is the main function of compound or conjugated lipids?
What is the main function of compound or conjugated lipids?
What class of lipids does the myelin sheath of the nerves belong to?
What class of lipids does the myelin sheath of the nerves belong to?
From which source are nonessential fatty acids mainly formed in the animal body?
From which source are nonessential fatty acids mainly formed in the animal body?
To which category does lauric acid belong?
To which category does lauric acid belong?
Which type of fatty acid deficiency can produce dermatitis, fatty liver, and impaired growth and reproduction?
Which type of fatty acid deficiency can produce dermatitis, fatty liver, and impaired growth and reproduction?
What is obtained from the hydrolysis of fats?
What is obtained from the hydrolysis of fats?
Which class of lipids contains examples such as phospholipids, glycolipids, and proteolipids?
Which class of lipids contains examples such as phospholipids, glycolipids, and proteolipids?
What are the examples of derived lipids produced by hydrolysis of other lipid groups or present in association with them in nature?
What are the examples of derived lipids produced by hydrolysis of other lipid groups or present in association with them in nature?
Which group of fatty acids is not formed in the animal body and therefore essential to take in the diet?
Which group of fatty acids is not formed in the animal body and therefore essential to take in the diet?
How are fatty acids classified nutritionally based on their formation in the animal body?
How are fatty acids classified nutritionally based on their formation in the animal body?
What are short, medium, or long chain monocarboxylic acids obtained from the hydrolysis of fats?
What are short, medium, or long chain monocarboxylic acids obtained from the hydrolysis of fats?
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Study Notes
Lipids as a Fuel
- Lipids serve as a fuel source, providing energy to the body.
Cell Membrane Building Blocks
- Phospholipids serve as building blocks in cell membranes.
Supporting Vital Organs
- Lipids support vital organs, such as the heart, by providing energy and maintaining their structure.
Types of Lipids
- Waxes are esters of fatty acids with high-molecular-weight alcohols.
- Compound or conjugated lipids contain additional groups, such as phosphorus, sulfur, or nitrogen, in addition to alcohols and fatty acids.
Primary Properties of Lipids
- Most lipids are hydrophobic, meaning they are insoluble in water and soluble in nonpolar solvents, such as benzene.
Myelin Sheath
- The myelin sheath of the nerves is primarily composed of sphingolipids.
Fatty Acids
- Fatty acids formed de novo in the animal body are mainly formed from carbohydrates.
- Lauric acid belongs to the category of saturated fatty acids.
- A deficiency in essential fatty acids can produce dermatitis, fatty liver, and impaired growth and reproduction.
Hydrolysis of Fats
- Fatty acids and glycerol are obtained from the hydrolysis of fats.
Neutral Fats
- Neutral fats stored in adipocytes serve as a source of energy.
Phospholipids
- Phospholipids serve as building blocks in cell membranes.
- The myelin sheath of the nerves is made up of phospholipids.
Waxes
- The primary function of waxes is to provide protection and waterproofing.
Compound or Conjugated Lipids
- The main function of compound or conjugated lipids is to provide structure and support to cells.
Nonessential Fatty Acids
- Nonessential fatty acids are mainly formed in the animal body from carbohydrates.
Essential Fatty Acids
- Essential fatty acids are not formed in the animal body and are therefore essential to take in the diet.
Derived Lipids
- Examples of derived lipids include fatty acids, glycerol, and cholesterol, which are produced by hydrolysis of other lipid groups or present in association with them in nature.
Classification of Fatty Acids
- Fatty acids are classified nutritionally based on their formation in the animal body, with essential fatty acids being those that are not formed in the body.
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