Which one of the following is not a phospholipid? (A) Lecithin (B) Plasmalogen (C) Lysolecithin (D) Gangliosides

Which one of the following is not a phospholipid? (A) Lecithin (B) Plasmalogen (C) Lysolecithin (D) Gangliosides
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Answer : D
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Which of the following is not a phospholipids? (A) Lecithin (B) Plasmalogen (C) Lysolecithin (D) Gangliosides

Description : Which of the following is not a phospholipids? (A) Lecithin (B) Plasmalogen (C) Lysolecithin (D) Gangliosides

Last Answer : Answer : D

When choline of lecithin is replaced by ethanolamine, the product is (A) Spingomyelin (B) Cephalin (C) Plasmalogens (D) Lysolecithin

Description : When choline of lecithin is replaced by ethanolamine, the product is (A) Spingomyelin (B) Cephalin (C) Plasmalogens (D) Lysolecithin

Last Answer : Answer : B

Phospholipase A2 is an enzyme which removes a fatty acid residue from lecithin to form (A) Lecithin fragments (B) Phosphotidic acid (C) Glyceryl phosphate (D) Lysolecithin

Description : Phospholipase A2 is an enzyme which removes a fatty acid residue from lecithin to form (A) Lecithin fragments (B) Phosphotidic acid (C) Glyceryl phosphate (D) Lysolecithin

Last Answer : Answer : D

Lysolecithin is formed from lecithin by the action of (A) Phospholipase A1 (B) Phospholipase A2 (C) Phospholipase C (D) Phospholipase D

Description : Lysolecithin is formed from lecithin by the action of (A) Phospholipase A1 (B) Phospholipase A2 (C) Phospholipase C (D) Phospholipase D

Last Answer : Answer : B

Lysolecithin is formed from lecithin by removal of (A) Fatty acid from position 1 (B) Fatty acid from position 2 (C) Phosphorylcholine (D) Choline

Description : Lysolecithin is formed from lecithin by removal of (A) Fatty acid from position 1 (B) Fatty acid from position 2 (C) Phosphorylcholine (D) Choline

Last Answer : Answer : B

Phospholipid acting as surfactant is (A) Cephalin (B) Phosphatidyl inositol (C) Lecithin (D) Phosphatidyl serine

Description : Phospholipid acting as surfactant is (A) Cephalin (B) Phosphatidyl inositol (C) Lecithin (D) Phosphatidyl serine

Last Answer : Answer : C

The alkyl radical in plasmalogen is an alcohol: (A) Saturated (B) Unsaturated (C) Both (A) and (B) (D) None of these

Description : The alkyl radical in plasmalogen is an alcohol: (A) Saturated (B) Unsaturated (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

If the fatty acid is esterified with an alcohol of high molecular weight instead of glycerol, the resulting compound is (A) Lipositol (B) Plasmalogen (C) Wax (D) Cephalin

Description : If the fatty acid is esterified with an alcohol of high molecular weight instead of glycerol, the resulting compound is (A) Lipositol (B) Plasmalogen (C) Wax (D) Cephalin

Last Answer : Answer : C

Sphingomyelins contain a complex amino alcohol named as (A) Serine (B) Lysolecithin (C) Sphingosine (D) Glycol

Description : Sphingomyelins contain a complex amino alcohol named as (A) Serine (B) Lysolecithin (C) Sphingosine (D) Glycol

Last Answer : Answer : C

An important finding in Tay-sach’s disease is (A) Renal failure (B) Accumulation of gangliosides in brain and spleen (C) Cardiac failure (D) Anemia

Description : An important finding in Tay-sach’s disease is (A) Renal failure (B) Accumulation of gangliosides in brain and spleen (C) Cardiac failure (D) Anemia

Last Answer : Answer : B

An important finding in Refsum’s disease is (A) Accumulation of ceramide trihexoside in the kidney (B) Accumulation of phytanic acid in the blood and tissues (C) Accumulation of gangliosides in brain and spleen (D) Skin eruptions

Description : An important finding in Refsum’s disease is (A) Accumulation of ceramide trihexoside in the kidney (B) Accumulation of phytanic acid in the blood and tissues (C) Accumulation of gangliosides in brain and spleen (D) Skin eruptions

Last Answer : Answer : B

Gangliosides are the glycolipids occurring in (A) Brain (B) Liver (C) Kidney (D) Muscle

Description : Gangliosides are the glycolipids occurring in (A) Brain (B) Liver (C) Kidney (D) Muscle

Last Answer : Answer : A

Cerebronic acid is present in (A) Glycerophospholipids (B) Sphingophospholipids (C) Galactosyl ceramide (D) Gangliosides

Description : Cerebronic acid is present in (A) Glycerophospholipids (B) Sphingophospholipids (C) Galactosyl ceramide (D) Gangliosides

Last Answer : Answer : C

Gangliosides derived from glucosylceramide contain in addition one or more molecules of (A) Sialic acid (B) Glycerol (C) Diacylglycerol (D) Hyaluronic acid

Description : Gangliosides derived from glucosylceramide contain in addition one or more molecules of (A) Sialic acid (B) Glycerol (C) Diacylglycerol (D) Hyaluronic acid

Last Answer : Answer : A

Gangliosides are complex glycosphingolipids found in (A) Liver (B) Brain (C) Kidney (D) Muscle

Description : Gangliosides are complex glycosphingolipids found in (A) Liver (B) Brain (C) Kidney (D) Muscle

Last Answer : Answer : B

LCAT is (A) Lactose choline alamine transferse (B) Lecithin cholesterol acyl transferase (C) Lecithin carnitine acyl transferase (D) Lanoleate carbamoyl acyl transferase

Description : LCAT is (A) Lactose choline alamine transferse (B) Lecithin cholesterol acyl transferase (C) Lecithin carnitine acyl transferase (D) Lanoleate carbamoyl acyl transferase

Last Answer : Answer : B

Lecithin contains a nitrogenous base named as (A) Ethanolamine (B) Choline (C) Inositol (D) All of these

Description : Lecithin contains a nitrogenous base named as (A) Ethanolamine (B) Choline (C) Inositol (D) All of these

Last Answer : Answer : B

Activated lecithin cholesterol acyl transferase is essential for the conversion of (A) VLDL remnants into LDL (B) Nascent HDL into HDL (C) HDL2 into HDL3 (D) HDL3 into HDL2

Description : Activated lecithin cholesterol acyl transferase is essential for the conversion of (A) VLDL remnants into LDL (B) Nascent HDL into HDL (C) HDL2 into HDL3 (D) HDL3 into HDL2

Last Answer : Answer : B

Dipalmitoyl lecithin acts as (A) Platelet activating factor (B) Second messenger for hormones (C) Lung surfactant (D) Anti-ketogenic compound

Description : Dipalmitoyl lecithin acts as (A) Platelet activating factor (B) Second messenger for hormones (C) Lung surfactant (D) Anti-ketogenic compound

Last Answer : Answer : C

The nitrogenous base in lecithin is (A) Ethanolamine (B) Choline (C) Serine (D) Betaine

Description : The nitrogenous base in lecithin is (A) Ethanolamine (B) Choline (C) Serine (D) Betaine

Last Answer : Answer : B

Apolipoprotein C-II is an activator of (A) Lecithin cholesterola acyl transferase (B) Phospholipase C (C) Extrahepatic lipoprotein lipase (D) Hepatic lipoprotein lipase

Description : Apolipoprotein C-II is an activator of (A) Lecithin cholesterola acyl transferase (B) Phospholipase C (C) Extrahepatic lipoprotein lipase (D) Hepatic lipoprotein lipase

Last Answer : Answer : C

What is Lecithin?

Description : What is Lecithin?

Last Answer : Phosphatidyl choline. 

Depot fats of mammalian cells comprise mostly of (A) Cholesterol (B) Phospholipid (C) Cerebrosides (D) Triglycerol

Description : Depot fats of mammalian cells comprise mostly of (A) Cholesterol (B) Phospholipid (C) Cerebrosides (D) Triglycerol

Last Answer : Answer : D

Co-lipase is a (A) Bile salt (B) Vitamin (C) Protein (D) Phospholipid

Description : Co-lipase is a (A) Bile salt (B) Vitamin (C) Protein (D) Phospholipid

Last Answer : Answer : C

In mammals, the major fat in adipose tissues is (A) Phospholipid (B) Cholesterol (C) Sphingolipids (D) Triacylglycerol

Description : In mammals, the major fat in adipose tissues is (A) Phospholipid (B) Cholesterol (C) Sphingolipids (D) Triacylglycerol

Last Answer : Answer : D

Nitrogenous base present in lecithin. -Biology

Description : Nitrogenous base present in lecithin. -Biology

Last Answer : answer:

Which can function as carrier in active ion absorption? (a) Feradoxin (b) Plastoquinone (c) Cytochrome (d) Lecithin

Description : Which can function as carrier in active ion absorption? (a) Feradoxin (b) Plastoquinone (c) Cytochrome (d) Lecithin

Last Answer : Ans. ((d))

Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin

Description : Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin

Last Answer : (d) Inulin, insulin

Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?(a) B : Adenine - A nucleotide that makes up nucleic acids (b) A : Triglyceride - Major source of energy (c) B : Uracil - A component of DNA (d) A : Lecithin - A component of cell membrane

Description : Which one of the following structural formulae of two organic compounds is correctly identified along with its related function? (a) B : Adenine - A nucleotide that makes up nucleic acids (b) A : Triglyceride - ... ) B : Uracil - A component of DNA (d) A : Lecithin - A component of cell membrane

Last Answer : (d) A : Lecithin - A component of cell membrane

Which one of the following biomolecules is correctly characterized? (a) Lecithin-a phosphorylated glyceride  found in cell membrane. (b) Palmitic acid - an unsaturated fatty acid with 18 carbon atoms. (c) Adenylic acid - adenosine with a glucose phosphate molecule. (d) Alanine amino acid - contains an amino group and an acidic group anywhere in the molecule.

Description : Which one of the following biomolecules is correctly characterized? (a) Lecithin-a phosphorylated glyceride  found in cell membrane. (b) Palmitic acid - an unsaturated fatty acid with 18 carbon atoms. ... Alanine amino acid - contains an amino group and an acidic group anywhere in the molecule.

Last Answer : (a) Lecithin-a phosphorylated glyceride  found in cell membrane

When a wound occurs in humans, the platelets in th blood activate a substance which starts the clotting process. The substance which starts the clotting is: a) adenosine (pron: ah-den-ah-seen) b) histamine c) lecithin (pron: less-ah-thin) d) thrombin

Description : When a wound occurs in humans, the platelets in th blood activate a substance which starts the clotting process. The substance which starts the clotting is: a) adenosine (pron: ah-den-ah-seen) b) histamine c) lecithin (pron: less-ah-thin) d) thrombin

Last Answer : ANSWER: D -- Thrombin

The characteristics that best describe the tail of a phospholipid molecule are?

Description : The characteristics that best describe the tail of a phospholipid molecule are?

Last Answer : I would describe the characteristics of the tail of aphospholipid molecule would be mosaic of lipid molecules. Theprocess of theses cells are talked and learnt in science.

What are the parts of a phospholipid molecule?

Description : What are the parts of a phospholipid molecule?

Last Answer : two layers of phospholipids called the lipid bilayer

What is phospholipid ?

Description : What is phospholipid ?

Last Answer : A compound composed of glycerol , fatty acids and phosphoric acid is called phospholipid. The special chemical component of phospholipids is phosphatidic acid. Its phosphate group is esterified with ... , including the cell membrane. Notable phospholipids are lecithin , cephalin , plasmogen, etc.

What is phospholipid ?

Description : What is phospholipid ?

Last Answer : A compound composed of glycerol , fatty acids and phosphoric acid is called phospholipid.

What Fatty acids in the tail of a phospholipid molecule are?

Description : What Fatty acids in the tail of a phospholipid molecule are?

Last Answer : This is called the hydrophobic 'side' of the phospholipid molecule

What the polar head of a phospholipid is made of molecules?

Description : What the polar head of a phospholipid is made of molecules?

Last Answer : Phosphate molecules.

There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport? a. The site of energy conversion and transport in the plasma membrane involves the phospholipid component b. The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP c. In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species d. Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose

Which of the following statement(s) is/are true concerning the cell plasma membrane? a. The plasma membrane is composed of amphipathic molecules b. The hydrophobic core of the lipid bilayer of the cell membrane contains specialized transport proteins which maintain the intracellular ionic milieu different from the extracellular fluid c. Plasma membrane proteins extend externally and bear phospholipid moieties which contribute to the cell coat d. The membrane proteins of nerve cells are highly voltage-dependent

Description : Which of the following statement(s) is/are true concerning the cell plasma membrane? a. The plasma membrane is composed of amphipathic molecules b. The hydrophobic core of the lipid bilayer of the ... contribute to the cell coat d. The membrane proteins of nerve cells are highly voltage-dependent

Last Answer : Answer: a, b, d The plasma membrane defines the boundary of the cell and serves to contain and concentrate enzymes and other macromolecule constituents. The plasma membrane is ... and bear carbohydrate moieties primarily as oligosaccharide chains that contribute to the cell coat or glycocalyx

Plasma membrane in eukaryotic cells is made up of - (1) Phospholipid (2) Lipoprotein (3) Phospholipo-protein (4) Phospho-protein

Description : Plasma membrane in eukaryotic cells is made up of - (1) Phospholipid (2) Lipoprotein (3) Phospholipo-protein (4) Phospho-protein

Last Answer : (1) Phospholipid Explanation: The cell membrane or plasma membrane is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable ... . The basic function of the cell membrane is to protect the cell from its surroundings.

Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Description : Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Last Answer : b) lipid

Thromboxane A2(TXA2): a. is derived from the membrane phospholipid b. its production is decreased by non-steroidal anti-inflammatory drugs c. causes platelet aggregation d. all above

Description : Thromboxane A2(TXA2): a. is derived from the membrane phospholipid b. its production is decreased by non-steroidal anti-inflammatory drugs c. causes platelet aggregation d. all above

Last Answer : all above

Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Description : Exon part of mRNAs have code for (a) protein (b) lipid (c) carbohydrate (d) phospholipid.

Last Answer : (a) protein

The plasma membrane consists mainly of (a) phospholipids embedded in a protein bilayer (b) proteins embedded in a phospholipid bilayer (c) proteins embedded in a polymer of glucose molecules (d) proteins embedded in a carbohydrate bilayer

Description : The plasma membrane consists mainly of (a) phospholipids embedded in a protein bilayer (b) proteins embedded in a phospholipid bilayer (c) proteins embedded in a polymer of glucose molecules (d) proteins embedded in a carbohydrate bilayer

Last Answer : (b) proteins embedded in a phospholipid bilayer

Which of the following events does not occur in rough endoplasmic reticulum? (a) Protein folding (b) Protein glycosylation (c) Cleavage of signal peptide (d) Phospholipid synthesis

Description : Which of the following events does not occur in rough endoplasmic reticulum? (a) Protein folding (b) Protein glycosylation (c) Cleavage of signal peptide (d) Phospholipid synthesis

Last Answer : (d) Phospholipid synthesis

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

Which of the following may be most likely to be missing from a gram-positive bacterium? A.Penicillin binding protein B.Peptidoglycan C.Lipopolysaccharide D.Phospholipid bilayer membrane

Description : Which of the following may be most likely to be missing from a gram-positive bacterium? A.Penicillin binding protein B.Peptidoglycan C.Lipopolysaccharide D.Phospholipid bilayer membrane

Last Answer : C.Lipopolysaccharide

All membranes of free-living organisms have phospholipid bilayers, but exception is A- bacteria B- fungi C- archaea D- protozoa

Description : All membranes of free-living organisms have phospholipid bilayers, but exception is A- bacteria B- fungi C- archaea D- protozoa

Last Answer : archaea

When comparing bacterial and archaeal cell membranes, only bacterial cell membranes a. Have three layers of phospholipids. b. Have a phospholipid bilayer. c. Are fluid. d. Have ether linkages.

Description : When comparing bacterial and archaeal cell membranes, only bacterial cell membranes a. Have three layers of phospholipids. b. Have a phospholipid bilayer. c. Are fluid. d. Have ether linkages.

Last Answer : b. Have a phospholipid bilayer.

The movement of glucose into a cell occurs by a. Facilitated diffusion. b. Active transport. c. Simple diffusion. d. Phospholipid exchange.

Description : The movement of glucose into a cell occurs by a. Facilitated diffusion. b. Active transport. c. Simple diffusion. d. Phospholipid exchange.

Last Answer : b. Active transport.