As per classification of fats, triglycerides are an example of :

Appeared in: IGNOU PB. Bsc. Nsg. Entrance-2025

Explanation

Triglycerides, also known as triacylglycerols, are esters formed from one molecule of glycerol and three molecules of fatty acids.
The definition of a simple lipid is an ester of fatty acids with an alcohol.
Since glycerol is an alcohol, triglycerides fit this definition perfectly.
They are the primary storage form of fat in the body and constitute over 95% of lipids in the diet.

Option A: Complex lipids is another term for compound lipids. They are incorrect because they contain additional chemical groups besides fatty acids and alcohol, which triglycerides do not have.
Option B: Compound lipids are incorrect because, by definition, they are esters of fatty acids that contain additional groups such as phosphoric acid (in phospholipids), carbohydrates (in glycolipids), or proteins (in lipoproteins).
Option D: Derived lipids are incorrect because they are the breakdown products obtained from the hydrolysis of simple and compound lipids. Triglycerides are the original intact molecule, not a product of its breakdown.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of Lipids as background academic context rather than a clinical decision trigger.
Monitoring blood triglyceride levels is a key part of assessing cardiovascular risk. High levels (hypertriglyceridemia) contribute to atherosclerosis, increasing the risk of heart attack and stroke.
Nurses play a vital role in educating patients about lifestyle modifications, such as diet and exercise, to manage high triglyceride levels.
Extremely high triglyceride levels (greater than 500 mg/dL) pose a significant risk for acute pancreatitis, a painful and potentially life-threatening inflammation of the pancreas.

How to Approach the Question

This is a factual recall question based on biochemical classification.
First, identify the key term in the question stem: 'triglycerides'.
Recall the basic chemical structure of a triglyceride, which is one glycerol molecule bonded to three fatty acid molecules.
Next, recall the definitions for the different classes of lipids provided in the options: Simple, Compound, and Derived.
Compare the structure of a triglyceride to these definitions. A triglyceride is a simple ester of fatty acids and an alcohol (glycerol), with no additional groups.
This directly matches the definition of a simple lipid, making it the correct answer.

Concept Tested & Keywords

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E6 textbook of Applied Biochemistry and Nutrition & DieteticsHarbans Lal (pp 26-464 of 479) pp. 274-276, 56-58

E6 Nutrition Monika Sharma 3e p. 96-98

Practise the full IGNOU PB. Bsc. Nsg. Entrance-2025

Attempt every question from this paper in a timed mock, then review the full solution for each one.