Upgrade to remove ads
Only $35.99/year

CH531 Ch. 5 multiple choice

Terms in this set (24)

Which one of these statements describes the typical lipid?
a. hydrophilic and lipophilic
b. hydrophilic and lipophobic
c. hydrophobic and lipophilic
d. hydrophobic and lipophobic
c
Which one of the following statements is incorrect with regard to fatty acids?
a. fatty acids are a type of carboxylic acid
b. fatty acids are mostly insoluble in water, but readily soluble in many organic solvents
c. the polymeric part of a fatty acid is a hydrocarbon chain
d. all of the above statements are correct
d
Which one of the following statements is incorrect with regard to unsaturated fatty acids?
a. low melting points and hence are oily liquids at room temperature
b. the hydrocarbon chain contains at least one double bond
c. they form linear molecules that are able to pack together closely
d. all of the above statements are correct
c
Which one of these compounds is an example of an omega-6 fatty acid?
a. lauric acid
b. linoleic acid
c. alpha-linolenic acid
d. palmitic acid
b
What is the difference between a simple and complex triacylglycerol?
in a simple triacylglycerol the three fatty acids are identical, in a complex one they are different
What is the compound formed by heating a triacylglycerol with an alkali such as sodium hydroxide called?
soap
What is the difference between glycerophospholipids and other triacylglycerols?
in a glycerophospholipid, one of the fatty acids is replaced by a hydrophilic group attached to the glycerol component by a phosphodiester bond
Which of these compounds is not an example of a glycerophospholipid?
a. phosphosphingosine
b. phsophatidic acid
c. phosphatidylglycerol
d. phosphatidylserine
a
What is a ganglioside?
a sphingolipid carrying, a complex sugar head group
Terpenes are based on a small hydrocarbon compound called what?
isoprene
What is the composition of the core sterol structure?
four hydrocarbon rings, three of which have six carbons each and one of which has five carbons
Which one of the following compounds is not a type of steroid hormone?
a. androgens
b. eicosanoids
c. glucocorticoids
d. progestins
b
What is the disease that results from vitamin D deficiency called?
rickets
Which of these types of eukaryotic membrane has the highest protein content?
a. endoplasmic reticulum
b. inner mitochondrial membrane
c. outer mitochondrial membrane
d. plasma membrane
b
The model for membrane structure proposed by Singer and Nicholson in 1972 is called what?
fluid mosaic model
Which one of the following statements is correct with regard to an integral membrane protein?
a. can only be removed from the membrane by disrupting the structure of the bilayer
b. forms a tight attachment with the membrane
c. most span the entire lipid bilayer
d. all of the above statements are correct
d
A barrel-like structure, with the walls of the barrel made up of Beta-sheet, is a typical feature of what?
transmembrane protein
What is the erythrocyte transporter protein an example of?
uniporter
What is the mammalian Na+/K+ ATPase protein an example of?
P-type pump
What is the mammalian Na+/glucose transporter protein an example of?
symporter
What is the Na+/Ca2+ exchange protein an example of?
antiporter
What is the commonest cystic fibrosis mutation called?
(delta)F508
In the MAP kinase system, what are individual proteins in the cascade activated by?
phsophorylation
Which one of the following statements is incorrect with regard to calmodulin?
a. activated by Ca2+ ions
b. influenced by cleavage of phosphatidylinositol-4.5-biphosphate
c. is an integral membrane protein
d. regulates a variety of enzymes
c
Sets with similar terms