Lipids Short Questions(MCQs) & Answers

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

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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Lipids MCQs | Lipids Short Questions(MCQs) & Answers

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