Which statement is not true?
All lipids contain fatty acids.
Lipids are compounds that are soluble in
Which of the following is not a function of lipids in the human body?
Which of the following lipids will give a single molecule of fatty acid when hydrolyzed?
A polyunsaturated fatty acid contains more than one
Unsaturated fatty acids have lower melting points than saturated fatty acids because
the cis double bonds give them an irregular shape
Which of the following is an unsaturated fatty acid?
B) oleic ***
Compared to saturated fatty acids, unsaturated fatty acids have
lower melting points
Waxes are lipids derived from
a long-chain alcohol and a long-chain fatty acid.
A triacylglycerol that is solid at room temperature is called a(n)
Commercially, liquid vegetable oils are converted to solid fats such as margarine by
Margarine containing partially hydrogenated soybean oil is solid because
some of its double bonds have been converted to single bonds.
The products of the acid catalyzed hydrolysis of a fat are
A) the esters of fatty acids.
B) fatty acids and glycerol ***
C) salts of fatty acids.
D) salts of fatty acids and glycerol.
A fatty acid salt can act as a soap to remove grease because
the nonpolar tails of the salt dissolve in the grease and the polar salt ends dissolve in water
Glycerophospholipids can interact both with other lipids and water because they contain
polar regions and nonpolar regions
The main lipid components in cellular membranes are
Which of the lipid types listed below is most soluble in water?
Which of the following compounds is a glycerophospholipid?
Which of the following is a lipid?
Which of the following is not a function of glycerophospholipids?
aid in digestion
The most common type of gallstones is composed of almost pure
Which of the following is not a lipoprotein that carries nonpolar lipids through the bloodstream?
The steroid hormone that increases the blood glucose and glycogen levels from fatty acids and amino acids is
In the fluid-mosaic model that describes cell membranes
two layers of glycerophospholipid molecules have their nonpolar sections oriented to the inside of the membrane
A double cheeseburger with bacon contains 39 g of fat. Calculate the number of kilocalories from fat. (1 gram of fat = 9 kcal).
350 kcal from fat
According to the fluid-mosaic model of a cell membrane, the main component of a membrane is
a lipid bilayer.
The type of lipid that gives a cell membrane its shape is a
A lipoprotein particle functions to
dissolve polar lipids in urine
Synthesis of cholesterol takes place in the
Cholesterol belongs to the ________ group of lipids
A precursor of prostaglandins is ________ acid
In a simple model of atherosclerosis and heart disease, the compound that forms plaques that adhere to the walls of the blood vessels is ________.
The name of the reaction that occurs when a fat reacts with sodium hydroxide and water is ________.
The catalyst needed for saponification is H+ ion.
Oleic acid is a saturated fatty acid
Fish such as salmon and tuna are high in omega-3 fatty acids.
Olestra is a triacylglycerol
Hydrogenation of a double bond in a triacylglycerol requires a catalyst
Most plant lipids are saturated lipids
One function of glycerophospholipids is to provide structure to cell membranes
In the fluid-mosaic model of cell membranes, the glycerophospholipid molecules are oriented with their heads to the outside of the membrane.
Glycerophospholipids are components of cell membranes
The interior of a lipid bilayer is the hydrophilic region.
Waxes do not contain fatty acids
Steroids do not contain fatty acids
Triacylglycerols are formed from glycerol and ________.
a lipid that cannot be hydrolyzed
the functional group of triacylglycerols
a fatty acid with at least one double bond
the process of converting unsaturated fats into saturated fats
the melting points of saturated fats compared to unsaturated fats
a source of most saturated fats
a characteristic common to most lipids
insoluble in water
the product of reacting a triacylglycerol with a strong base and water
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