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BIOCHEM CHAP 19 Test

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1.
Fatty acids are amphipathic
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2.
Four major classes of plasma lipoproteins
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3.
Major function of lipoproteins
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4.
What is an example of carboxyloic acid salt?
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5.
Ethanolamine or serine are
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6.
What is cholesterol?
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7.
Membrane lipids are used for what?
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8.
Lipids include
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9.
Simple sphingoglycolipids are called cerebrosides, they are lipids that contain
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10.
Linoleic acid
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11.
In terms of functional groups, triacylglycerols are
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12.
What does alkaline mean?
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13.
Although a portion of the body’s cholesterol is obtained from dietary intake, most of it is biosynthesized by the
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14.
LinolENIC acid is the primary member of _________?
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15.
How is a lipid characterized?
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16.
What is a steroid?
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17.
Unsaturated vs saturated fatty acids melting points
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18.
A Sphingophospholipid is a
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19.
Nomenclature for fatty acids. Consider a-linolenic acid
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20.
What is a food produced by partial hydrogenation?
A.
(18-3) is the primary member of the omega-3 acid family.
B.
a lipid is characterized based on solubility characteristics.
C.
is a lipid that contains one fatty acid and one phosphate group attached to a sphingosine molecule and an alcohol attached to the phosphate group.
D.
a steroid is a lipid whose structure is based on a fused ring system that involves three 6-membered rings and one 5 membered ring.
E.
these are cephalins. Cephalins in high amounts in brain, nerve, and blood clotting membranes.
F.
Because of the bends the double bonds create in the fatty acid structure, it prevents the atoms from packing as close together. So the increase of double bonds will cause unsaturated fatty acids to have lower melting points.
G.
that contains both a fatty acid and a carbohydrate component attached to a sphingosine molecule.
H.
help suspend lipids and transport them through the bloodstream
I.
is an essential fatty acid. Must have this in your diet or you cannot survive.
J.
it means it is a basic solution.
K.
Fatty acids, triglycerides, sphingolipids, phosphoacylglycerols, and glycolipids. Lipid-soluble vitamins. Prostaglandins, leukotrienes, and thromboxanes. Cholesterol, steroid hormones, and bile acids.
L.
liver and (to a lesser extent) the intestine.
M.
are used to hold the contents of the cell. Have membrane lipids like phospholipids, sphingoglygolipids, cholesterol (must have cholesterol embedded in the membranes so that it will be fluid.)
N.
triesters. Three ester functional groups are present. There are three fatty acids attached to glycerol and the esters attached the fatty acids to glycerol.
O.
cholesterol is a steroid.
P.
soap
Q.
peanut butter. Stick of margarine.
R.
18
S.
Chylomicrons, Very-low-density lipoproteins (VLDL), Low-density lipoproteins (VLDL).
T.
possessing both polar and nonpolar groups; that is, hydrophilic and hydrophobic substituents.
Type the Answer that corresponds to the displayed Question.
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21.
What is the most abundant steroid in the membrane?
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22.
Fats are in what state at room temperature?
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23.
Nuts contain what kind of fat?
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24.
emulsion is the lipids suspended in a liquid.
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25.
is a lipid formed by esterification of three fatty acids to a glycerol molecule.
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26.
blood plates, blood clots, leukotriene. They are cyclic ethers.
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27.
more than one double bond in the alkyl chain.
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28.
is a reaction carried out in an alkaline (basic) solution.
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29.
these are lecithins. Lecithins are in high amounts in egg yolk and soybean, nerve and brain membranes.
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30.
emulsion is the lipids suspended in a liquid. We need this in the body for bile acids secreted by the liver emulsifying the fats. It helps us digest fat soluble vitamins.

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