Lipids MCQs | Lipids Multiple Choice Questions(MCQs) & Answers

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Questions
1 Which of the following molecule can act as molecular chaperons for assisting the folding of proteins?
A Carbohydrates
B Vitamins
C Lipids
D Amides

Answer: Lipids
2 Fat storing cells of vertebrates are called
A Hepatocytes
B Asterocytes
C Adipocytes
D Melanocytes

Answer: Adipocytes
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3 Main function of preen glands in birds is
A Hormone secretion
B Fatty acid degradation
C Wax secretion
D Pigment synthesis

Answer: Wax secretion
4 Natural lipids are readily soluble in
A Oil
B Mercury
C Water
D None of these

Answer: None of these
5 Choose the monounsaturated fatty acid out of the following-
A Oleic acid
B Linoleic acid
C Linolenic acid
D Stearic acid

Answer: Oleic acid
6 Choose the correct statement about fatty acids out of the following-
A The melting point of fatty acids increases with the increasing degree of unsaturation
B The membrane lipids contain mostly unsaturated fatty acids
C Lipids in tissues that are subject to cooling are more saturated
D Naturally occurring unsaturated long-chain fatty acids are nearly all of the Trans configuration

Answer: The membrane lipids contain mostly unsaturated fatty acids
7 Which out of the following enzymes is defective in Gaucher’s disease?
A β- Galactocerebosidase
B Sphingomyelinase
C Hexosaminidase A
D β- Glucocerebrosidase

Answer: β- Glucocerebrosidase
8 For which out of the following compounds cholesterol does not serve as a precursor?
A Bile pigments
B Bile salts
C Sex hormones
D Vitamin D

Answer: Bile pigments
9 The normal level of serum Total cholesterol is———–?
A 150-220 mg/dl
B 100-200 mg/dl
C 1.5-2.5g/dl
D 20-40 mg/dl

Answer: 100-200 mg/dl
10 What are the components of a Galactocerebroside?
A Sphingosine+ fatty acids +Phosphoric acid+ Galactose
B Glycerol +Fatty acids +Phosphoric acid +Nitrogenous base+ Galactose
C Glycerol +Fatty acids +Phosphoric acid+ Galactose
D Sphingosine+ fatty acid+ Galactose

Answer: Sphingosine+ fatty acid+ Galactose
11 Hydrolysis of fats by alkalies into fatty acids and glycerol is called
A Coagulation
B Saponification
C Suspension
D Colloidal

Answer: Saponification
12 Essential fatty acids are
A Linoleic acid
B Arachidonic acid
C Linolenic acid
D All of these

Answer: All of these
13 Which of the following statement is true
A Oxidative rancidity is observed more frequently in vegetable fats than animal fats
B Plants fats ado not undergo oxidative rancidity
C Oxidative rancidity can be effectively checked by dehydrogenation of fatty acids
D Oxidative rancidity is observed more frequently in animal fats than vegetable fats

Answer: Oxidative rancidity is observed more frequently in animal fats than vegetable fats
14 Generally fats with unsaturated fatty acids are ____________ at room temperature (25oC)
A Solid
B Liquid in the presence of oxygen
C Liquid in the absence of oxygen
D Liquid

Answer: Liquid
15 Beta-oxidation of fatty acids takes place at
A Peroxisome
B Mitochondria
C Mitochondria and Peroxisome
D Mitochondria, Peroxisome and ER

Answer: Mitochondria
16 In which type of chromatography, solvents of increasing polarity are passed through a column of silica gel?
A High performance liquid chromatography
B Thin layer chromatography
C Adsorption chromatography
D Gas-liquid chromatography

Answer: Adsorption chromatography
17 For the determination of fatty acid composition, transesterification is done in a warm aqueous solution of
A KCl+methanol
B KOH+methanol
C H2O+methanol
D NaOH+methanol

Answer: NaOH+methanol
18 Which technique is preferred in the separation of fatty acyl methyl esters from a mixture?
A Absorption chromatography
B TLC
C Centrifugation
D Gas-liquid chromatography

Answer: Gas-liquid chromatography
19 In which type of chromatography lipids are carried up a silica gel coated pate by a rising solvent front, less polar travels farther than the more polar ones?
A Absorption chromatography
B Thin layer chromatography
C Gas-liquid chromatography
D HPLC

Answer: Thin layer chromatography
20 Which of the following is a characteristic of both triacylglycerols and glycerophospholipids?
A Both contain carboxyl groups and are amphipathic
B Both contain fatty acids and are saponifiable
C Both contain glycerol and ether bonds
D Both can be negatively charged at cellular pH

Answer: Both contain fatty acids and are saponifiable.

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