Triglycerides are (A) Heavier than water (B) Major constituents of membranes (C) Non-polar (D) Hydrophilic

Triglycerides are (A) Heavier than water (B) Major constituents of membranes (C) Non-polar (D) Hydrophilic
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05. What kind of substances can’t permeate membranes by passive diffusion? a) Lipid-soluble b) Non-ionized substances c) Hydrophobic substances d) Hydrophilic substances 06. A hydrophilic medicinal agent

Description : 05. What kind of substances can’t permeate membranes by passive diffusion? a) Lipid-soluble b) Non-ionized substances c) Hydrophobic substances d) Hydrophilic substances 06. A hydrophilic medicinal agent

Last Answer : d) Hydrophilic substances

06. A hydrophilic medicinal agent has the following property: a) Low ability to penetrate through the cell membrane lipids b) Penetrate through membranes by means of endocytosis c) Easy permeation through the blood-brain barrier d) High reabsorption in renal tubules

Description : 06. A hydrophilic medicinal agent has the following property: a) Low ability to penetrate through the cell membrane lipids b) Penetrate through membranes by means of endocytosis c) Easy permeation through the blood-brain barrier d) High reabsorption in renal tubules

Last Answer : a) Low ability to penetrate through the cell membrane lipids

In fluid mosaic model of plasma membrane (a) upper layer is non-polar and hydrophilic (b) upper layer is polar and hydrophobic (c) phospholipids form a bimolecular layer in middle part (d) proteins form a middle layer.

Description : In fluid mosaic model of plasma membrane (a) upper layer is non-polar and hydrophilic (b) upper layer is polar and hydrophobic (c) phospholipids form a bimolecular layer in middle part (d) proteins form a middle layer.

Last Answer : (c) phospholipids form a bimolecular layer in middle part

In normal phase HPLC: A. a hydrophilic stationary phase is combined with a non-polar mobile phase. B. a hydrophobic stationary phase is combined with a polar mobile phase. C. a hydrophobic stationary phase is combined with a non-polar mobile phase. D. a hydrophilic stationary phase is combined with a polar mobile phase.

Description : In normal phase HPLC: A. a hydrophilic stationary phase is combined with a non-polar mobile phase. B. a hydrophobic stationary phase is combined with a polar mobile phase. C. a hydrophobic ... a non-polar mobile phase. D. a hydrophilic stationary phase is combined with a polar mobile phase.

Last Answer : A. a hydrophilic stationary phase is combined with a non-polar mobile phase

Are the triglycerides polar?

Description : Are the triglycerides polar?

Last Answer : No. Glycerol is polar, but once the three fatty acids are added(in triglycerides) it becomes non polar.

The major storage form of lipids is (A) Esterified cholesterol (B) Glycerophospholipids (C) Triglycerides (D) Sphingolipids

Description : The major storage form of lipids is (A) Esterified cholesterol (B) Glycerophospholipids (C) Triglycerides (D) Sphingolipids

Last Answer : Answer : C

The major lipid in chylomicrons is (A) Triglycerides (B) Phospholipids (C) Cholesterol (D) Free fatty acids

Description : The major lipid in chylomicrons is (A) Triglycerides (B) Phospholipids (C) Cholesterol (D) Free fatty acids

Last Answer : Answer : A

Amphiphatic lipids are (A) Hydrophilic (B) Hydrophobic (C) Both (A) and (B) (D) Lipophilic

Description : Amphiphatic lipids are (A) Hydrophilic (B) Hydrophobic (C) Both (A) and (B) (D) Lipophilic

Last Answer : Answer : C

Lipoprotein present in cell membrane is by nature: (A) Hydrophilic (B) Hydrophobic (C) Both (A) and (B) (D) None of these

Description : Lipoprotein present in cell membrane is by nature: (A) Hydrophilic (B) Hydrophobic (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

An amino acid having a hydrophilic side chain is (A) Alanine (B) Proline (C) Methionine (D) Serine

Description : An amino acid having a hydrophilic side chain is (A) Alanine (B) Proline (C) Methionine (D) Serine

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Which of the following statements is not true about phospholipids? (a) They are similar to triacylglycerols except that the middle OH group of glycerol reacts with a phosphate rather than with a fatty acid. (b) They constitute a major component of cell membranes. (c) Phosphatidic acid is a phospholipid. (d) The C-2 carbon of glycerol in phosphoacylglycerols has the R configuration

Description : Which of the following statements is not true about phospholipids? (a) They are similar to triacylglycerols except that the middle OH group of glycerol reacts with a phosphate rather than with a ... is a phospholipid. (d) The C-2 carbon of glycerol in phosphoacylglycerols has the R configuration

Last Answer : They are similar to triacylglycerols except that the middle OH group of glycerol reacts with a phosphate rather than with a fatty acid

What is the major constituents of waste/polluted water discharged from textile, pulp & paper, tanning, distillery, dairy and meat packing industries? (A) Radioactive substances (B) Natural organic products (C) Inorganic pollutants (D) None of these

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Fatty acids are a major energy source for the body. Which of the following statement(s) is/are true concerning the use of fatty acids as an energy source? a. Fatty acids are stored in adipocytes as triglycerides b. Hormone-sensitive lipase is present only in adipose tissue c. Fatty acids are released into the circulation traveling freely in plasma d. Approximately 25% of total nonprotein caloric needs supplied via total parenteral nutrition should be in the form of fat

Description : Fatty acids are a major energy source for the body. Which of the following statement(s) is/are true concerning the use of fatty acids as an energy source? a. Fatty acids are stored in ... 25% of total nonprotein caloric needs supplied via total parenteral nutrition should be in the form of fat

Last Answer : Answer: a, b, d In most tissues, fatty acids are readily oxidized for energy. They are especially important energy sources for the heart, liver and skeletal muscle. In ... administered to patients receiving total parenteral nutrition should comprise about 5-30% of total nonprotein caloric needs

Major lipid class present in chylomicrons is (a) Endogenous triglycerides (b) Cholesterol esters (c) Dietary triglycerides (d) All of the above

Description : Major lipid class present in chylomicrons is (a) Endogenous triglycerides (b) Cholesterol esters (c) Dietary triglycerides (d) All of the above

Last Answer : Ans: C

____ make up the major components of fat, butter, shortening, and oil. a. Compounds c. Spingolipids b. Composites d. Triglycerides

Description : ____ make up the major components of fat, butter, shortening, and oil. a. Compounds c. Spingolipids b. Composites d. Triglycerides

Last Answer : d. Triglycerides

What is the major component of plasma membranes?

Description : What is the major component of plasma membranes?

Last Answer : Most of the membrane is composed of phospholipid molecules.These allow the membrane tobe rather fluid (not stiff). Embedded in this membrane areproteins which give some structure to ... the membrane andprevents higher temperatures from increasing fluidity.Cholesterol is only found in animal cells.

What is the major component of plasma membranes?

Description : What is the major component of plasma membranes?

Last Answer : Most of the membrane is composed of phospholipid molecules.These allow the membrane tobe rather fluid (not stiff). Embedded in this membrane areproteins which give some structure to ... the membrane andprevents higher temperatures from increasing fluidity.Cholesterol is only found in animal cells.

Which of the following types of molecules are the major structural components of cell membranes?

Description : Which of the following types of molecules are the major structural components of cell membranes?

Last Answer : a. Phospholipids and proteins. ///// b. Phospholipids and cellulose.//// c. Nucleic acids and proteins.//// d. Glycoproteins and cholesterol.

What are the three major components of glycerophospholipids, the main component of lipid bilayers that comprise cellular membranes?

Description : What are the three major components of glycerophospholipids, the main component of lipid bilayers that comprise cellular membranes?

Last Answer : Glycerol, a phosphate group, fatty acid chains

The major constituents in agar are a. Fats b. Aminoacids c. Polysaccharides d. Polypeptides

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Which hydrocarbons are the major constituents of 'LPG'? (1) Methane and Ethane (2) Propane and Butane (3) Pentane and Benzene (4) Only Methane

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Last Answer : (2) Propane and Butane Explanation: Cooking gas, also known as Liquefied Petroleum Gas (LPG) is primarily propane (C3Hg) and butane (C4H10).

With reference to the skeletal muscle myofilaments a. actin is the major constituent of thin filaments b. myosin and tropomyosin combine to form the thick filaments c. troponin is a constituents of thin filaments d. tropomyosin prevents the interaction of actin and myosin in the resting state

Description : With reference to the skeletal muscle myofilaments a. actin is the major constituent of thin filaments b. myosin and tropomyosin combine to form the thick filaments c. troponin is a constituents of thin filaments d. tropomyosin prevents the interaction of actin and myosin in the resting state

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Which of the following is the most major constituents of air pollutants? (A) Oxides of sulphur (B) Oxides of nitrogen (C) Carbon monoxide (D) Hydrogen sulphide

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The major constituents of glass are (A) Lime, clay and soda ash (B) Sand, lime and soda ash (C) Silica, alumina and clay (D) Silica, alumina and soda ash

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Last Answer : (B) Sand, lime and soda ash

The rocks having alumina or clay as their major constituents are known as (A) Siliceous rocks (B) Argillaceous rocks (C) Calcareous rocks (D) Sedimentary rocks

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What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates

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Lipids are insoluble in water because lipid molecules are (a) hydrophilic (b) hydrophobic (c) neutral (d) zwitter ions.

Description : Lipids are insoluble in water because lipid molecules are (a) hydrophilic (b) hydrophobic (c) neutral (d) zwitter ions.

Last Answer : (b) hydrophobic

Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement? (A) Xanthates (B) Stearic acid (C) Calcium & aluminium stearate (D) Formic acid

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Last Answer : (C) Calcium & aluminium stearate

Hydrophilic group of a soap or detergent solution is (A) Water hating(B) Soil loving(C) Water loving(D) None of these

Description : Hydrophilic group of a soap or detergent solution is (A) Water hating (B) Soil loving (C) Water loving (D) None of these

Last Answer : (C) Water loving

Elastomers are:** A. Hydrophilic B. Hydrophobic C. Water-loving impression material D. Potassium alginates E. None of the above

Description : Elastomers are:** A. Hydrophilic B. Hydrophobic C. Water-loving impression material D. Potassium alginates E. None of the above

Last Answer : B. Hydrophobic

A nonpolar molecule is usually: w) hydrophilic x) soluble in water y) hydrophytic z) soluble in organic solvents

Description : A nonpolar molecule is usually: w) hydrophilic x) soluble in water y) hydrophytic z) soluble in organic solvents

Last Answer : ANSWER: Z -- SOLUBLE IN ORGANIC SOLVENTS

A substance which readily forms colloidal solution in contact with water is called (1) Extrinsic colloid (2) Associated colloid (3) Hydrophobic colloid (4) Hydrophilic colloid

Description : A substance which readily forms colloidal solution in contact with water is called (1) Extrinsic colloid (2) Associated colloid (3) Hydrophobic colloid (4) Hydrophilic colloid 

Last Answer : Hydrophilic colloid

Phospholipids are important cell membrane components since (A) They have glycerol (B) Form bilayers in water (C) Have polar and non-polar portions (D) Combine covalently with proteins

Description : Phospholipids are important cell membrane components since (A) They have glycerol (B) Form bilayers in water (C) Have polar and non-polar portions (D) Combine covalently with proteins

Last Answer : Answer : C

Phospholipids are important cell membrane components because (A) They have glycerol (B) They can form bilayers in water (C) They have both polar and non polar potions (D) They combine covalently with proteins

Description : Phospholipids are important cell membrane components because (A) They have glycerol (B) They can form bilayers in water (C) They have both polar and non polar potions (D) They combine covalently with proteins

Last Answer : Answer : C

Which of the following gives a positive Ninhydrin test? (A) Reducing sugar (B) Triglycerides (C) α-amino acids (D) Phospholipids

Description : Which of the following gives a positive Ninhydrin test? (A) Reducing sugar (B) Triglycerides (C) α-amino acids (D) Phospholipids

Last Answer : Answer : C

Glycerol-3-phosphate for the synthesis of triglycerides in adipose tissue is derived from (A) Phosphatidic acid (B) Diacylglycerol (C) Glycerol (D) Glucose

Description : Glycerol-3-phosphate for the synthesis of triglycerides in adipose tissue is derived from (A) Phosphatidic acid (B) Diacylglycerol (C) Glycerol (D) Glucose

Last Answer : Answer : D

In the biosynthesis of triglycerides from glycerol 3-phosphate and acyl-CoA, the first intermediate formed is (A) 2-Monoacylglycerol (B) 1, 2-Diacylglycerol (C) Lysophosphatidic acid (D) Phosphatidic acid

Description : In the biosynthesis of triglycerides from glycerol 3-phosphate and acyl-CoA, the first intermediate formed is (A) 2-Monoacylglycerol (B) 1, 2-Diacylglycerol (C) Lysophosphatidic acid (D) Phosphatidic acid

Last Answer : Answer : D

Lovastatin and mevastatin lower (A) Serum triglycerides (B) Serum cholesterol (C) Serum phospholipids (D) All of these

Description : Lovastatin and mevastatin lower (A) Serum triglycerides (B) Serum cholesterol (C) Serum phospholipids (D) All of these

Last Answer : Answer : B

Carnitine is required for the transport of (A) Triglycerides out of liver (B) Triglycerides into mitochondria (C) Short chain fatty acids into mitochondria (D) Long chain fatty acids into mitochondria

Description : Carnitine is required for the transport of (A) Triglycerides out of liver (B) Triglycerides into mitochondria (C) Short chain fatty acids into mitochondria (D) Long chain fatty acids into mitochondria

Last Answer : Answer : D

Salivary lipase converts dietary triglycerides into (A) Diglycerides and fatty acids (B) Monoglycerides and fatty acids (C) Glycerol and fatty acids (D) All of these

Description : Salivary lipase converts dietary triglycerides into (A) Diglycerides and fatty acids (B) Monoglycerides and fatty acids (C) Glycerol and fatty acids (D) All of these

Last Answer : Answer : A

Salivary lipase hydrolyses the ester bond at (A) Position 1 of triglycerides (B) Position 2 of triglycerides (C) Position 3 of triglycerides (D) All of these

Description : Salivary lipase hydrolyses the ester bond at (A) Position 1 of triglycerides (B) Position 2 of triglycerides (C) Position 3 of triglycerides (D) All of these

Last Answer : Answer : C

Saliva contains a lipase which acts on triglycerides having (A) Short chain fatty acids (B) Medium chain fatty acids (C) Long chain fatty acids (D) All of these

Description : Saliva contains a lipase which acts on triglycerides having (A) Short chain fatty acids (B) Medium chain fatty acids (C) Long chain fatty acids (D) All of these

Last Answer : Answer : A

Glycerol released from adipose tissue by hydrolysis of triglycerides is mainly (A) Taken up by liver (B) Taken up by extrahepatic tissues (C) Reutilised in adipose tissue (D) Excreted from the body FATS AND FATTY ACID METABOLISM 85

Description : Glycerol released from adipose tissue by hydrolysis of triglycerides is mainly (A) Taken up by liver (B) Taken up by extrahepatic tissues (C) Reutilised in adipose tissue (D) Excreted from the body FATS AND FATTY ACID METABOLISM 85

Last Answer : Answer : A

In adipose tissue, glycerol-3-phosphate required for the synthesis of triglycerides comes mainly from (A) Hydrolysis of pre-existing triglycerides (B) Hydrolysis of phospholipids (C) Dihydroxyacetone phosphate formed in glycolysis (D) Free glycerol

Description : In adipose tissue, glycerol-3-phosphate required for the synthesis of triglycerides comes mainly from (A) Hydrolysis of pre-existing triglycerides (B) Hydrolysis of phospholipids (C) Dihydroxyacetone phosphate formed in glycolysis (D) Free glycerol

Last Answer : Answer : C

Lipids are stored in the body mainly in the form of (A) Phospholipids (B) Glycolipids (C) Triglycerides (D) Fatty acids

Description : Lipids are stored in the body mainly in the form of (A) Phospholipids (B) Glycolipids (C) Triglycerides (D) Fatty acids

Last Answer : Answer : C

Diets having a high ratio of polyunsaturated: saturated fatty acids can cause (A) Increase in serum triglycerides (B) Decrease in serum cholesterol (C) Decrease in serum HDL (D) Skin lesions

Description : Diets having a high ratio of polyunsaturated: saturated fatty acids can cause (A) Increase in serum triglycerides (B) Decrease in serum cholesterol (C) Decrease in serum HDL (D) Skin lesions

Last Answer : Answer : B

Triglycerides are transported from liver to extrahepatic tissues by (A) Chylomicrons (B) VLDL (C) HDL (D) LDL

Description : Triglycerides are transported from liver to extrahepatic tissues by (A) Chylomicrons (B) VLDL (C) HDL (D) LDL

Last Answer : Answer : B

Cerebonic acid is present in (A) Triglycerides (B) Cerebrosides (C) Esterified cholestrol (D) Sphingomyelin

Description : Cerebonic acid is present in (A) Triglycerides (B) Cerebrosides (C) Esterified cholestrol (D) Sphingomyelin

Last Answer : Answer : B

Low density plasma proteins are rich in (A) Chylomicrons (B) Cholesterol (C) Triglycerides (D) Phospholipids

Description : Low density plasma proteins are rich in (A) Chylomicrons (B) Cholesterol (C) Triglycerides (D) Phospholipids

Last Answer : Answer : B

Which of the followings gives a positive test for Ninhydrin? (A) Reducing sugars (B) Triglycerides (C) Alpha aminoacids (D) Esterified Fats

Description : Which of the followings gives a positive test for Ninhydrin? (A) Reducing sugars (B) Triglycerides (C) Alpha aminoacids (D) Esterified Fats

Last Answer : Answer : C