Lipids Quiz | Lipids Objective Type Questions & Answers

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Questions
21 Which is a characteristic of all the fatty acid components in this lipid?
A They all are joined to glycerol through an ester bond
B They all are hydrophilic because they contain oxygen
C They all contain unconjugated cis double bonds
D They all contain an unbranched carbon chain

Answer: They all contain an unbranched carbon chain
22 _____ Which is a characteristic of biological membranes?
A Membranes contain lipids that polymerize into one large molecule
B Membranes have hydrophobic groups on the surfaces
C Membranes have an asymmetrical micelle structure
D Membranes contain proteins and amphipathic lipids

Answer: Membranes contain proteins and amphipathic lipids
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23 _____ Which would be a property of all the major types of lipids in this membrane?
A They would have polar heads and non-polar tails
B They would be saponifiable in base and hydrolyzed in acid
C They would be composed of five-carbon units
D They would be joined to each other through covalent bonds

Answer: They would have polar heads and non-polar tails
24 _____ Which will be a characteristic of a steroid that is part of a cell membrane?
A It will contain a hydroxyl group
B It will contain four aromatic rings
C It will contain choline
D It will contain an amide bond

Answer: It will contain a hydroxyl group
25 _____ Which is a property of lipids in cell membranes?
A The hydrophobic groups of lipid molecules are found on membrane surfaces
B Some types of lipids are found preferentially in the outer membrane layer
C Most of the lipids are hydrocarbons composed of five-carbon units
D Most of the lipids function in transporting biomolecules into the cell

Answer: Some types of lipids are found preferentially in the outer membrane layer
26 _____ Which characteristic is shared by a cell membrane and a chylomicron?
A Both have a bilayer structure
B Both contain a high proportion of triglycerides
C Both contain a high proportion of sterols
D Both contain specific proteins

Answer: Both contain specific proteins
27 _____ Which is a general property of cell membranes?
A Membranes contain more lipid than protein
B Membrane proteins have a polar head and a non-polar tail
C Membrane lipids are amphipathic
D Membranes contain covalent bonds between fatty acids

Answer: Membrane lipids are amphipathic
28 _____ Which component is found in all sphingolipids?
A A Carbohydrate
B A Negative Charge
C A Phosphate Group
D An Amino Alcohol

Answer: An Amino Alcohol
29 _____ Which is a characteristic of the components in cell membranes?
A A protein molecule in a membrane can move laterally and can also flip from one surface to the other
B A lipid molecule in a membrane interacts with other membrane molecules through non-covalent forces
C Increasing the proportion of protein in a membrane increases the amount of membrane symmetry
D Increasing the proportion of saturated fatty acids in a membrane increases membrane fluidity

Answer: A lipid molecule in a membrane interacts with other membrane molecules through non-covalent forces
30 _____ Which is a difference between integral membrane proteins and peripheral membrane proteins?
A Integral membrane proteins contain mainly α-helices while peripheral membrane proteins contain mainly β-pleated sheets
B Integral membrane proteins often contain carbohydrates on the inner surface while peripheral membrane proteins often contain carbohydrates on the outer surface
C Integral membrane proteins bind to the membrane using hydrophobic forces while peripheral membrane proteins bind to the membrane using hydrophilic forces
D Integral membrane proteins always span the entire membrane while peripheral membrane proteins are always located on one side of the membrane

Answer: Integral membrane proteins bind to the membrane using hydrophobic forces while peripheral membrane proteins bind to the membrane using hydrophilic forces
31 _____ Which type of membrane lipid could contain serine?
A A Globoside
B A Cerebroside
C A Glycerophospholipid
D A Ganglioside

Answer: A Glycerophospholipid
32 _____ Which characteristic is most likely shared by a cell membrane and a lipoprotein particle?
A Both are composed of a lipid bilayer
B Both contain a high amount of triacylglycerols
C Both contain hydroxyl groups on the surface
D Both contain proteins in the interior

Answer: Both contain hydroxyl groups on the surface
33 _____ Which is a property of integral membrane proteins?
A
B All integral membrane proteins contain carbohydrate groups within the membrane
C All integral membrane proteins span the entire membrane
D All integral membrane proteins contain hydrophilic regions

Answer: All integral membrane proteins contain hydrophilic regions
34 _____ Which is a characteristic of the lipids in a biological membrane?
A Specific glycerophospholipids are distributed equally on the two membrane surfaces
B Lipid molecules are held in fixed positions by non-covalent bonds with proteins
C The fluidity of the membrane decreases with lower levels of saturated fatty acids
D The fatty acids of lipid molecules are found in the interior of the membrane

Answer: Liquid
35 _____ Which property is shared by integral membrane proteins and peripheral membrane proteins?
A Both can contain an unusually high proportion of hydrophobic R-groups
B Both can contain regions of α-helices and β-pleated sheets
C Both can flip between the two sides of the membrane
D Both can form hydrogen bonds with the hydrocarbons of lipids

Answer: Mitochondria
36 _____ Which membrane lipid contains an amide bond?
A Cholesterol
B Phosphatidylserine
C Phosphatidic Acid
D Sphingomyelin

Answer: Sphingomyelin
37 _____ Which property can be shared by this lipid and a terpene?
A Both can contain isoprene
B Both can form micelles
C Both can contain a saturated fatty acid
D Both can be very hydrophobic molecules

Answer: Both can be very hydrophobic molecules
38 _____ Which characteristic is shared by this lipid and an eicosanoid?
A This lipid and a leukotriene are both polyunsaturated molecules
B This lipid and a thromboxane can both be hydrolyzed in base to produce soaps
C This lipid and a prostaglandin can both be hydrolyzed in acid to create fatty acids
D This lipid and an arachidonic acid both contain glycerol and hydrocarbon chains

Answer: This lipid and a leukotriene are both polyunsaturated molecules
39 _____ Which property does this lipid share with a typical triacylglycerol?
A Both contain an ether bond
B Both contain a long-chain alcohol
C Both are amphipathic
D Both are saponifiable

Answer: Both are saponifiable
40 _____ Which characteristic does this lipid share with a wax?
A Both contain a polar head
B Both contain three fatty acids
C Both contain one or more ester bonds
D Both contain one or more carboxyl groups

Answer: Both contain one or more ester bonds

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