16 Questions
What is the main characteristic that differentiates saturated fats from unsaturated fats?
Presence of double bonds in the chemical structure
Why are saturated fats called 'saturated'?
They are 'saturated' with hydrogen atoms
Which solvent is NOT suitable for dissolving lipids?
Water
What type of unsaturated fat contains only one double bond in its structure?
Monounsaturated fats
What is the classification of a fat or oil that has different R-groups?
Mixed glyceride
Which type of esters are generally solids due to a higher percentage of saturated fatty acids in the R groups?
Simple glycerides
How can oils be converted into fats?
Hydrogenation
Which type of lipids contain phosphoric acid and a nitrogen base along with glycerol and fatty acids?
Glycerophospholipids
Which part of a phospholipid molecule is hydrophilic?
The phosphate group
What is the main property that makes soap effective in removing oil and grease stains?
Amphipathic properties
Which type of lipids are the basic structural elements of all living organisms?
Phospholipids
What is the main difference between cephalin and sphingolipids in terms of their composition?
Type of alcohol
Why are vitamins classed under lipids?
Because of their solubility in fats.
What is the role of LDL cholesterol in the body?
Raises the risk for heart disease and stroke.
What is the primary function of cholesterol in cells?
Contribute to the structure of cell membranes.
Why are glycolipids mentioned in the text?
Because they contain a complex alcohol and nitrogen but no phosphorus.
Learn about the structure of cell membrane lipids, including the composition of phospholipids with polar phosphate heads and nonpolar lipid tails. Understand how the hydrophilic and hydrophobic properties of lipids contribute to the cell membrane's function.
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