Lipids MCQs | Lipids Short Questions(MCQs) & Answers

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Questions
41 _____ Based on its structural similarity to other lipids, this lipid most likely functions as
A A Membrane Component
B A Sex Hormone
C A Vitamin Required For Vision
D An Energy Storage Molecule

Answer: An Energy Storage Molecule
42 _____ Which type of membrane lipid contains an acidic oligosaccharide?
A Phosphatidylinositol
B Cerebroside
C Ganglioside
D Globoside

Answer: Ganglioside
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43 _____ What is the proper designation for the unsaturated fatty acids in this lipid?
A 18:2 (Δ9,12)
B 18:2 (Δ6,9)
C 17:2 (Δ9,12)
D 17:2 (Δ5,8)

Answer: 18:2 (Δ6,9)
44 _____ Which is a property of eicosanoids?
A All eicosanoids contain three conjugated double bonds
B All eicosanoids contain arachidonic acid and sphingosine
C Prostaglandins and leukotrienes both contain a ring structure
D Thromboxanes and prostaglandins both contain a carboxyl group

Answer: Thromboxanes and prostaglandins both contain a carboxyl group
45 Which is a characteristic of sphingolipids?
A They all contain a fatty acid joined to glycerol
B They all contain a long-chain alcohol joined to isoprene
C They all contain ceramide joined to a polar group
D They all contain a carbohydrate joined to a phosphate group

Answer: They all contain ceramide joined to a polar group
26 _____ Which of the following is a characteristic of both waxes and terpenes?
A Both can contain an amino alcohol
B Both can contain a fatty acid
C Both can be non-saponifiable
D Both can contain oxygen

Answer: Both can contain oxygen
47 _____ Which of the following structures is a 20:2 (Δ4,9) fatty acid?
A CH3(CH2)9CH = CH(CH2)3CH = CH(CH2)2COOH
B CH3(CH2)2CH = CH(CH2)3CH = CH(CH2)9COOH
C CH3(CH2)10CH = CH(CH2)3CH = CHCH2COOH
D CH3CH2CH = CH(CH2)3CH = CH(CH2)10COOH

Answer: CH3(CH2)9CH = CH(CH2)3CH = CH(CH2)2COOH
48 Which of the following molecules is a typical fatty acid?
A A molecule that has an even number of carbon atoms in a branched chain
B An amphipathic dicarboxylic acid with unconjugated double bonds
C A molecule that has one cis double bond in a linear carbon chain
D A polar hydrocarbon with that reacts with NaOH to form a salt

Answer: A molecule that has one cis double bond in a linear carbon chain
49 Which of the following is not a phospholipase?
A A
B C
C D
D K

Answer: K
50 The dye used in TLC for detecting separated lipids by spraying the plate is
A Mordant
B Alizarin
C Rhodamine
D Fuchsin

Answer: Rhodamine
51 A mixture of fatty acyl methyl esters are separated based on
A Charge
B Chain length and degree of saturation
C Molecular weight
D Ionic size

Answer: Chain length and degree of saturation
52 Phosphatidylinositol, phosphatidylglycerol and phosphatidylserine are easily separated by
A Absorption chromatography
B TLC
C HPLC
D Gas-liquid chromatography

Answer: TLC
53 Which would move faster in thin layer chromatography?
A Beeswax
B Phosphatidylinositol
C Cholesterol
D Steroid

Answer: Beeswax
54 Which of the following is false about lipids?
A They are either strongly hydrophobic or amphipathic
B They are more soluble in water
C Extraction of lipids from tissues require organic solvents
D They are insoluble in water

Answer: They are more soluble in water
55 Dietary fats are transported as
A Chylomicrons
B Liposomes
C Lipid globules
D Oil droplets

Answer: Chylomicrons
56 Greater the number of carbon atom in chain of fatty acid __________
A The boiling point will be higher
B The boiling point will be lesser
C The melting point will be higher
D The melting point will be lower

Answer: The melting point will be higher
57 Carnauba wax is an example for __________
A Liquid wax
B Soft wax
C Hard wax
D Archaebacterial wax

Answer: Hard wax
58 Naturally occurring fats are ______
A L types
B D types
C An equi-molar mixture of L and D types
D Symmetric

Answer: L types
59 Which of the following is an example for derived lipids?
A Steroids
B Terpenes
C Carotenoids
D All of these

Answer: All of these
60 Polenske value of fatty acid indicates __________.
A How much unsaturation is there in the fatty acid
B Level of saturation in the fatty acid
C Indication of branching of fatty acid in the fat
D How much volatile fatty acid can be extracted through saponification

Answer: How much volatile fatty acid can be extracted through saponification

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