Which subclassification of lipids would include cholesterol and its derivatives?
eicosanoids
fat soluble vitamins
phospholipids
fats
steroids
The Correct Answer is E
A. eicosanoids: Eicosanoids (like prostaglandins) are derived from arachidonic acid, not cholesterol.
B. fat soluble vitamins: These are vitamins A, D, E, and K, which are lipids but are not cholesterol-based structures.
C. phospholipids: Phospholipids have a glycerol backbone, fatty acids, and a phosphate group, not a steroid ring structure.
D. fats: Fats (triglycerides) are made of glycerol + three fatty acids, not cholesterol.
E. steroids: Steroids include cholesterol, testosterone, estrogen, and other hormones with a four-ring carbon backbone.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. it is a decomposition dehydration reaction: Dehydration removes water, but this reaction adds water (H₂O).
B. it is an anabolic reaction: Anabolic reactions build larger molecules from smaller ones. This reaction is breaking a molecule apart.
C. it is an exchange reaction: Exchange reactions involve swapping parts between molecules—not just splitting.
D. it is a decomposition hydrolysis reaction: This is a decomposition (breaking down) reaction using hydrolysis (water added to break bonds).
E. it is a synthesis dehydration reaction: That would involve joining molecules together and removing water, which is not the case here.
Correct Answer is D
Explanation
A. monosaccharides: Monosaccharides are the building blocks of carbohydrates, not lipids.
B. a glycerol plus three glycogen chains: Glycogen is a polysaccharide, not a component of triglycerides.
C. a glycerol plus three amino acid chains: Amino acids form proteins, not triglycerides.
D. a glycerol plus three fatty acid chains: A triglyceride is made of one glycerol molecule and three fatty acids-this is the primary structure of fats.
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