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Concept explainers
(a)
Interpretation: The total number of water molecules that participates in the reaction if a simple triacylglycerol undergoes complete acidic hydrolysis has to be predicted.
Concept introduction: The hydrolysis of triacylglycerol is carried out in the presence of an acid or a base. The hydrolysis of triacylglycerol takes place in the presence of an acid forms glycerol and fatty acid as the desired products. The hydrolysis of triacylglycerol takes place in the presence of a base forms glycerol and fatty acid salts as the desired products.
The process of converting a fat or oil into the fatty acid salts and glycerol in the presence of water and a base like
(b)
Interpretation: The total number of water molecules that participates in the reaction if a mixed triacylglycerol undergoes complete acidic hydrolysis has to be predicted.
Concept introduction: The hydrolysis of triacylglycerol is carried out in the presence of an acid or a base. The hydrolysis of triacylglycerol takes place in the presence of an acid forms glycerol and fatty acid as the desired products. The hydrolysis of triacylglycerol takes place in the presence of a base forms glycerol and fatty acid salts as the desired products.
The process of converting a fat or oil into the fatty acid salts and glycerol in the presence of water and a base like
(c)
Interpretation: The total number of water molecules that participates in the reaction if a simple triacylglycerol undergoes saponification has to be predicted.
Concept introduction: The hydrolysis of triacylglycerol is carried out in the presence of an acid or a base. The hydrolysis of triacylglycerol takes place in the presence of an acid forms glycerol and fatty acid as the desired products. The hydrolysis of triacylglycerol takes place in the presence of a base forms glycerol and fatty acid salts as the desired products.
The process of converting a fat or oil into the fatty acid salts and glycerol in the presence of water and a base like
(d)
Interpretation: The total number of water molecules that participates in the reaction if a mixed triacylglycerol undergoes saponification has to be predicted.
Concept introduction: The hydrolysis of triacylglycerol is carried out in the presence of an acid or a base. The hydrolysis of triacylglycerol takes place in the presence of an acid forms glycerol and fatty acid as the desired products. The hydrolysis of triacylglycerol takes place in the presence of a base forms glycerol and fatty acid salts as the desired products.
The process of converting a fat or oil into the fatty acid salts and glycerol in the presence of water and a base like
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Chapter 19 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Provide an example of each of the following lipids. For those lipids that are fatty acids indicate whether you expect your example to be a liquid or solid at room temperature and alsogive their IUPAC names .a. An -9 fatty acid b. An -7 fatty acid c. A prostaglandin d. A phytosterolarrow_forwardAlkaline hydrolysis of one molecule of triacylglycerol yields _________ a. three molecules of glycerol and three moles of fatty acids b. three moles of glycerol and one mole of fatty acids c. one molecule of glycerol and three molecules of sodium salt of fatty acid d. three molecules of glycerol and one molecule of sodium salt of fatty acidarrow_forwardAll of the following are examples of monounsaturated fatty acids except A. Palmitoleic acid B. Oleic acid C. Elaidic acid D. Linoleic acidarrow_forward
- You have two bottles, each of which contains a white, crystalline substance. Your lab director tells you that one contains lactose and the other sucrose. Your job is to determine which bottle contains which sugar. Which procedure would you use? A. Test for the ability to reduce Cu2+. Only lactose will react. B. Test both for solubility in water. Sucrose is very soluble; lactose is only minimally soluble. C. React each with bromine (Br2) water. Only sucrose will react. D. Dissolve each in water and record the pH. Lactose is far more acidic than sucrose. Termites and cows have bacteria in their digestive tracts that can obtain glucose from plant cellulose because they have enzymes that can attack A. α-D-glucoside. B. β-D-glucoside. C. cellulose branch points. D. hydrogen bonds in cellulose fibrils. The chemical name for table sugar is ________ and it is a ________. A. lactose; disaccharide…arrow_forwardWhich of the following polysaccharides cannot be cleaved with ?α-amylase, a glycosidase that catalyzes the hydrolysis of ?α 1-4 glycosidic bonds. Select all that apply a. Amylopectin b. Glycogen c. Chitin d. Cellulose e. Amylosearrow_forwardWhich 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_forward
- What are derived from the treatment of triacylglycerols with strong bases? A. salts of triacylglycerol B. phosphatidic acids C. diacylglycerols D. free glycerols E. salts of fatty acidsarrow_forwardWhich of the following are examples of structural isomers formed during metabolsim? Select one: a. 3-phosphoglycerate to 2-phosphoglycerate b. Dihydroxyacetone and glyceraldehyde-3-phosphate c. glucose-6-phosphate converted to fructose-6-phosphate d. citrate converted to isocitrate e. All of these are examples of structural isomers.arrow_forwardDesferal (Desferrioxamine B) is a drug given to thalassaemic patients who are being treated by blood transfusion and who suffer from iron overload. Desferal contains which of the following iron binding groups: Select one: a. Carboxylic acids. b. Hydroxamates. c. Carboxylates. d. Hydroxamic acids. e. A mixture of carboxylates and hydroxamates. ----- is it hydroxamates or hydroxamic acids?? and what is the difference between them?arrow_forward
- Match 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_forwardHydrolysis of a mixture of glycerophospholipids may yield the following, EXCEPT: A. Galactose B. Choline C. Serine amino acid D. Phosphatearrow_forwardChoose the monounsaturated fatty acid Select one : a. Linolenic acid b. Linoleic acid c. Oleic acid d. Stearic acidarrow_forward
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