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Free download in PDF Lipids Objective Type Questions & Answers for competitive exams. These Lipids Objective Questions with Answers are important for Board Exams as well as competitive exams like AIIMS, NEET and other Pre-Medical Exams. These short solved questions or quizzes are provided by Gkseries.
(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
(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
(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
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
36
_____ Which membrane lipid contains an amide bond?
[A]
Cholesterol
[B]
Phosphatidylserine
[C]
Phosphatidic Acid
[D]
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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