LIPIDS Flashcards
A class of organic molecules that are lipophilic and hydrophilic
Lipids
What makes lipids poorly soluble in aqueous media and generally soluble in organic solvents?
Lipids’ relatively large hydrocarbon contribution to their structure
Lipids are what type of group of compounds?
Heterogenous group of compounds
Lipids are related more by what type of properties rather than what type of properties?
Physical properties rather than chemical properties
What are the common properties of lipids?
Relatively insoluble in water
Soluble in nonpolar solvents (such as ether and chloroform.)
Why are lipids important dietary constituents?
Because of their high energy value of fats
Because of their essential fatty acids, fat-soluble vitamins, and other lipophilic macronutrients contained in the fat of natural foods.
What are the three classifications of Lipids?
Simple Lipids
Complex Lipids
Derived Lipids
Classification of Lipids that include fats and waxes which are esters of fatty acids with various alcohols.
Simple Lipids
A type of simple lipids witch have esters of fatty acids with glycerol. Oils are fats in the liquid state
Fats
Type of simple lipids which have esters of fatty acids with higher molecular weight monohydric alcohols.
Waxes
A classification of lipids that are esters of fatty acids, which always contain alcohols and one or more fatty acids, but which also have other groups.
Complex Lipids
What are the three types of complex lipids?
Phospholipids
Glycolipids (glycosphingolipids)
Other complex lipids
Type of complex lipids that contains a phosphoric acid residue and frequently have nitrogen-containing bases and other substituents.
Phospholipids
What is the alcohol in many phospholipids?
Glycerol (Glycerophospholipids)
What is the alcohol in sphingophospholipids?
Sphingosine (contains an amino group)
