18 Questions
What is the precursor of all other steroids in animals?
Cholesterol
Which compound lipid is esterified to phosphoric acid at C-3 of the glycerol backbone?
Phospholipid
What property of fatty acids increases with increasing molecular weight due to more van der Waals interactions?
Melting point
Which lipid is added to foods like mayonnaise to prevent the separation of aqueous and fat components?
Phospholipid
What configuration do the double bonds in unsaturated fatty acids generally have?
Cis configuration
Which member of the steroid family is the most abundant in animals?
Cholesterol
What is the main structural material of beehives?
Beeswax
Which of the following is NOT a function of fat in the body?
Transport oxygen in the blood
Which type of lipid is composed of esters of fatty acids with glycerol?
Simple lipids
What are compound lipids?
Esters of fatty acids with alcohol and posses additional group
What are derived lipids?
Derived from simple or compound lipids through hydrolysis or other processes
Which lipid type includes fats in their liquid state?
Simple lipids
Which type of fatty acids need to be included in the diet because they cannot be synthesized?
Omega-3 and omega-6 fatty acids
What is the common name for 18:3Δ9,12,15 numerical symbol?
α-Linolenic acid (ALA)
What causes oxidative rancidity in foods and cosmetic products?
Exposure to air, light, or moisture
Which process modifies lipids and can be detected in foods rich in fats or oils?
Rancidity
What are omega-3 and omega-6 fatty acids transformed into in the body?
Eicosanoids
What type of reaction causes polyunsaturated fats and oils to become rancid?
Radical chain reaction with O2
Test your knowledge about phospholipids, their basic structure, functions, and derived lipids. Learn about lecithins, respiratory distress syndrome, and other important aspects related to lipids.
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