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Concept explainers
Interpretation:
Incorrect characterization of lactone has to be chosen among the given options.
Concept Introduction:
Esters are prepared by condensation of
Esterification reaction is the one in which the carboxylic acid is condensed with an alcohol (or phenol) in presence of strong acid catalyst to produce ester. The general reaction scheme can be given as,
In the above reaction, hydroxyl group is lost from carboxylic acid and hydrogen is lost from alcohol molecule to form water as the byproduct.
If the considered compound is a hydroxyacid, then there is a possibility of intermolecular esterification reaction. The product obtained in this case is a cyclic ester. Cyclic esters contain an oxygen atom in the ring and a carbonyl group also.
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Chapter 16 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Define the following terms: a. ganglioside b. sphingolipidoses c. isoprenoid d. terpene e. mixed terpenoidarrow_forwardIndicate whether the following pairs of monosaccharides are aldoses or ketoses. a. D-altrose & D-xylose b. D-arabinose & D-glyceraldehyde c. D-erythrulose & D-psicose d. D-talose & D-gulose e. dihydroxyacetone & D-tagatose f. D-idose & D-threosearrow_forwardWhich of the following families:amino acid classifications is/are correct? a.aromatic:Met b.aspartate:Pro c.glutamate:Arg d.pyruvate:Valarrow_forward
- Which of the following is/are reducing sugar/s?why? A CHOH CHOH CHOH OH OH CHOH OH CH,OH OH OH он C CHOH OH CHOH CHOH HỌ CH2OH OH OH OH OH ÓH u tte Select one: O a. Conly, it is a monosaccharide with a free carbonyl group O b. A and B only, both disaccharides are made from aldoses O C. B, C and D, they have at least one free carbonyl group O d. A and D only, both disaccharides are made from ketosis O. e. B and D, each has a free carboxyl grouparrow_forwardClassify each of the following sugar pairs as enantiomers, diastereomers, epimers, or an aldose–ketose pair. a. D-erythrose and D-threose b. D-glucose and D-mannose c. D-ribose and L-ribose d. D-allose and D-galactose e. D-glyceraldehyde and dihydroxyacetonearrow_forwardDefine the following: 1. Cofactor 2. Coenzyme 3. "-ase" endingarrow_forward
- Describe any two heteropolysaccharides in terms of: a. The types of monosaccharides involved b. types of glycosidic linkages, and c. possible hydrolysatesarrow_forwardAll sugar residues are in their D-isomeric forms. The first sugar residue is a(n): (select any/all answers that apply) A. hexose. B. pentose. C. furanose. D. pyranose. E. aldehyde when drawn in its linear form. F. ketone when drawn in its linear form.arrow_forwardDefine the following terms: a. arginosuccinate b. Krebs bicycle c. N-acetylglutamate d. BH4 e. taurinearrow_forward
- Listed below are descriptions that may belong to amylose, amylopectin, both, or it may not belong to either. Write A if it describes amylose, B if it describes amylopectin, AB if the statement applies to both, or O if it doesn’t apply to either. 1. Its monosaccharides are bound by at least one α-1,4-glycosidic bond. 2. It contains α-1,6-glycosidic bonds. 3. It can be broken down by the enzyme α-amylase. 4. A polysaccharide made up of gulose. 5. It can form a double helix.arrow_forwardWhat is the common feature between an aldo- hexose and a ketohexose: A The number of secondary alcohol functions B The number of carbonyl groups C The number of asymmetric carbons D The number of primary alcohol functions E The nature of their carbonyl grouparrow_forwardDefine the following terms: a. eicosanoid b. omega-6 fatty acid c. omega-3 fatty acid d. trans fatty acid e. acyl grouparrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
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