Concept explainers
(a)
Interpretation:
The natural source for the disaccharide formed by an
Concept introduction:
Disaccharide forms by linkage between two monosaccharides.
Maltose is made up of two glucose molecules joined by an
The source of Maltose is malt.
(b)
Interpretation:
The natural source for the disaccharide that contains fructose and glucose has to be determined.
Concept introduction:
Disaccharide forms by linkage between two monosaccharides.
Sucrose is a disaccharide made up of a molecule of glucose attached to a fructose molecule by an
The main source of Sucrose is sugar cane.
(c)
Interpretation:
The natural source for the disaccharide that contains galactose and glucose has to be determined.
Concept introduction:
Disaccharide forms by linkage between two monosaccharides.
Lactose is a disaccharide made up of a galactose molecule attached to glucose by an
The main source of Sucrose is milks.
Want to see the full answer?
Check out a sample textbook solutionChapter 20 Solutions
EBK FUNDAMENTALS OF GENERAL, ORGANIC, A
- Classify the glycosidic bonds in each of the following disaccharides.arrow_forwarda)What is the hydrolysis mechanism of carbohydrates?• Polysaccharides ?• Disaccharides ?b) State the differences of chemical structures of glucose, fructose and galactose? c) What is reducing sugar?d) Why glucose and/or fructose syrups used in food industry?arrow_forwardGlucose is the most abundant monosaccharide. In energy metabolism it is the most important source of energy for most organisms. a) D- and L- designations are used to distinguish between the two possible isomers of the monosaccharide. What is the relationship between D-glucose and L-glucose? b) Determine the designation of this enantiomer of glucose. c) How many chiral centers are present in the straight chain form of glucose? d) How many stereoisomers are possible for the straight chain form of glucose? e) How many chiral centers are present in the cyclic form of glucose? ) Including the different configurations of the anomeric carbon, how many cyclic isomers of D-glucose can be formed?arrow_forward
- Which is true of reducing disaccharidess: a) One sugar has an unlinked anomeric carbon b) the anomeric carbons of both sugars are linked c) both sugars are ketoses d) one sugar is a ketose and the other is an aldose Amylose differs from amylopectin in that amylose is: a) branched b) unbranched c) required in the diet d) found only in bacteria The structure of glycogen most closely resembles that of: a) cellulose b) amylose c) amylopectin d) egg albumin The structure of cellulose differs from that of amylose in which way? A) cellulose uses fructose while amylose uses glucose b) cellulose has branches while amylose does not c) amylose has branches while cellulose does not d) cellulose has beta-links while amylose has alpha links The following sugar is commonly found in nature: a) L – fucose b) L-glucose c) L-ribose d) L – galactose Hyaluronic acid is classified as a: a) peptidoglycan b) ketohexose c) glycosaminoglycan d)…arrow_forwardWhich linear monosaccharide below corresponds to this cyclic one? A) A B) B C) C D) D E) None of themarrow_forward1) The smallest monsaccharides that can exist are: a) Pentoses b) Trioses c) Hexoses d) Tetroses 2) The structure of D-galactose differs from that of D-glucose at: a) carbon 1 and carbon 2 b) carbon 6 c) carbon 5 d) carbon 4 4) Which of the following pairs of monosaccharides contain different number of carbon atoms? a) gulose and tagatose b) glucose and galactose c) glyceraldehyde and dihydroxyacetone d) fructose and ribosearrow_forward
- Refer to the lipid structure below. CH,-O-C-(CH,),,CH, CH-O-C-(CH,),CH, NH,+ CH-O-P-O-CH,-CH-COO- A. Identify the lipid structure, give its role, function, and enumerate its hydrolysis products. B. Explain which hydrolyzed component will test positive in the Acrolein test? Ninhydrin test?arrow_forwardMatch the following compounds with choices (a) monosaccharide, (b) disaccharide, or (c) polysaccharide:SucroseGlucoseGlycogenFructoseStarcharrow_forwardWhat are the glycosidic linkages of the trisaccharide shown? α1→6, α1→6 α1→6, β1→6 α1→6, β1→5 α1→6, α1→5arrow_forward
- Identify the modified monosaccharides found in naturally occurring polysaccharides and identify the functions of these polysaccharides.arrow_forwardDraw the structure and give the systematic name of the given disaccharides. Lactose which is also known as milk sugar: β-D-Gal(1à4)β-D-Glc, where Gal is galactose and Glc is glucose. Sucrose which is also known as table sugar: a-D-Glc (1-->2) b-D-Fru where Glc is glucose and Fru is fructose.arrow_forwardConsider the following statements: (1) The term sugar is a general designation for both monosaccharides and disaccharides. (2) The "penultimate carbon" in a monosaccharide is used to determine D- or L-configuration. (3) Sucrose is a reducing sugar and lactose is a nonreducing sugar. O Two of the three statements are true. All three statements are true. O Only one of the statements is true. None of the statements are true.arrow_forward
- BiochemistryBiochemistryISBN:9781319114671Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.Publisher:W. H. FreemanLehninger Principles of BiochemistryBiochemistryISBN:9781464126116Author:David L. Nelson, Michael M. CoxPublisher:W. H. FreemanFundamentals of Biochemistry: Life at the Molecul...BiochemistryISBN:9781118918401Author:Donald Voet, Judith G. Voet, Charlotte W. PrattPublisher:WILEY
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage LearningBiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage LearningFundamentals of General, Organic, and Biological ...BiochemistryISBN:9780134015187Author:John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. PetersonPublisher:PEARSON