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Concept explainers
(a)
Interpretation: The given substance has to be classified as an energy-storage lipid, a membrane lipid, or an emulsification lipid.
Concept introduction: There are five categories of lipids on the basis of biochemical functions: Energy storage lipids, Membrane lipids, Emulsification lipids, Messenger lipids and Protective coating lipids
(b)
Interpretation: The given substance has to be classified as an energy-storage lipid, a membrane lipid, or an emulsification lipid.
Concept introduction: There are five categories of lipids on the basis of biochemical functions: Energy storage lipids, Membrane lipids, Emulsification lipids, Messenger lipids and Protective coating lipids
(c)
Interpretation: The given substance has to be classified as an energy-storage lipid, a membrane lipid, or an emulsification lipid.
Concept introduction: There are five categories of lipids on the basis of biochemical functions: Energy storage lipids, Membrane lipids, Emulsification lipids, Messenger lipids and Protective coating lipids
(d)
Interpretation: The given substance has to be classified as an energy-storage lipid, a membrane lipid, or an emulsification lipid.
Concept introduction: There are five categories of lipids on the basis of biochemical functions: Energy storage lipids, Membrane lipids, Emulsification lipids, Messenger lipids and Protective coating lipids
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Chapter 19 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- The following is a block diagram for a glycerophospholipid where the building blocks are labeled with letters and the linkages between building blocks are labeled with numbers. ____________ 5. Which building blocks are glycerol residues? ____________ 6. Which building blocks are phosphate residues? ____________ 7. Which linkages involve an alcohol residue? ____________ 8. Which linkages involve both glycerol and fatty acid residues?arrow_forwardA) Briefly describe the basic structure of phospholipids and explain how they can provide an effective barrier against the unregulated movement of molecules into or out of cells. B) Not all phospholipids are identical to one another. Describe two components (parts) of that can be altered to create variation between different phospholipids.arrow_forwardA phospholipid is a biomolecule composed of a phosphate group that is bonded to two lipid chains. Which of the following correctly describes the nature of those two components? (a) The phosphate group is hydrophobic, and the lipid chains are hydrophilic. (b) Both the phosphate group and the lipid chains are hydrophilic. (c) Both the phosphate group and the lipid chains are hydrophobic. (d) The phosphate group is hydrophilic, and the lipid chains are hydrophobic.arrow_forward
- Which of the following statements concerning glycolipids is true? a. All glycolipids contain sphingosine. b. All glycolipids contain one sugar residue. c. All glycolipids contain phosphatidylglycerol. d. Some glycolipids contain ceramide, while others do not.arrow_forwardWhich compound is NOT a membrane lipid? a). Sphingolipid b). Glycerophospholipid c). Triacyglycerol d). Cholesterolarrow_forwardMatch the following descriptions with the correct lipid-based compounds: v Cholesterol A. regulates calcium and phosphorus metabolism and deposition in bones v Sphingolipids B. prevents the attack of peroxides on unsaturated fatty acids in membrane v Phosphoacylgycerol C. usually found on the cell surface of blood cells for cell recognition v Glycerophospholipids D. building block of complex lipids v Fatty acyls E. serve as storage fat in the liver and muscles v Glycerolipids F. bulky & rigid and fits into membrane lipids disrupting membrane regularity v Gangliosides G. plays a role in vision and the development of nervous system H. involved in metabolism and signalling I. abundant in nervous system J. control cell permeability K. synthesized from isoprene units and used by plants for growth and odor v Terpenes v Vitamin A Vitamin D Vitamin Earrow_forward
- Which of the following about glycerophospholipids and sphingolipids is incorrect? Select one: A. Both glycerophospholipids and sphingolipids are used as component of cell membrane. OB. Glycerophospholipids have two fatty acids connected to a glycerol backbone with a phosphate polar head group. * C. Both glycerophospholipids and sphingolipids contain at least one fatty acid. D. Sphingolipids have a sphingosine backbone in which a fatty acid can be attached to C1 and a sugar can be attached to C2. E. Ceramides are the precursors of all sphingolipids.arrow_forwardPhospholipids undergo saponification much like triglycerides. Draw the structure of a phospholipid meeting the followingcriteria. Then draw the products that would result from its saponification.(a) a cephalin containing stearic acid and oleic acid (b) a lecithin containing palmitic acidarrow_forwardIdentify the type of lipid in each compound. Glycerophospholipids are a class of phospholipids. ва C19H39 COOH CH₂(CH₂)28CH3 НННННННН Н ......... с-с-с-с-с-С-С-С-С-С-Н III НННН Н Н Н Н Н НННН НННН Н II I L I I 1 TU с-с-с-с-с-с-с-с-С-С-Н FIT III ННН H НННН Н НННН Н Н LI I I . С-С-С-С-С-С-С O ННННН HO Н3С(СН2)15 :-0 H-C-O H-C-0 H d wax fatty acid triacylglyceride steroid prostaglandin phospholipid Н Н -0- HO .COOH -CH₂arrow_forward
- (a) Cholesterol is a lipid yet does not form membranes like the membrane lipids and is not used to store energy like the storage lipids. Explain. b) Glycerophospholipids and sphingolipids form membranes but triacylglycerols do not. Why? (c) Triacylglycerols are used for long term energy storage but glycogen and starch are used for short term energy storage. Explainarrow_forwardDefine the three most common types of membrane lipidsarrow_forwardList an important function of each of these types of lipids.a. triglycerides c. waxesb. phospholipids d. steroidsarrow_forward
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