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Concept explainers
Interpretation:
Amino acid phenylalanine is hydrophilic or hydrophobic has to be identified and explained.
Concept introduction:
Many amino acids are linked together through amide bonds to form a biologically large molecule known to be proteins.
Amino acid had both amino
Amino functional group is
The amino acids that are neutral are further classified into polar and non-polar.
The non-polar side chain are again classified into hydrophobic (water hating) and hydrophilic (water loving).
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Chapter 18 Solutions
Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
- Draw the structural for the lipid glyceryl tristearate and draw a dotted line about the portion that makes it soluble in nonpolar solvents like cyclohexane. Format BIU ...arrow_forwardWhy should phenylketonurics avoid using aspartame, an artificial sweetener? (Hint: Aspartame is Laspartyl-L-phenylalanine methyl ester.)arrow_forwardWhich of the following is the correct systematic name of the disaccharide shown? α-D-glucopyranosyl-(1→3)-β-D-galactopyranose α-D-gulopyranosyl-(1→4)-β-D-glucopyranose α-D-gulopyranosyl-(1→4)-β-D-galactopyranose α-D-glucopyranosyl-(1→3)-β-D-glucopyranosearrow_forward
- A disaccharide that is found in dairy products can be formed by the two monosaccharides. Please draw the Haworth structure of this disaccharide and give the name of the glycosidic bond.arrow_forwardDraw the structure of the disaccharide with a systematic name of: (1→6)-B-1) glucopyranosyl-B-D-fructofuranosidearrow_forwardGiven the structures of the saccharides below, encircle and name the glycosidic bonds present. Indicate the orientation (α or β) of each monosaccharide units in the given figures.arrow_forward
- What is the systematic name of the cyclic monosaccharide shown here? Be sure to include the structural form as a component of the name. H OH CH₂OH H OH H H OH B-D-glucopyranoside B-D-glucopyranose B-D-glucofuranose Previous Page B-D-glucofuranoside OH -I H Next Page Page 10 of 25arrow_forwardWrite the name for the trisaccharide depicted below (for example, of the form a - D - xylofuranose). Be sure to include if the sugars are in the pyranose or furanose conformations in the name and include the linkages between sugars (for example, (2 - - > 4)). CH₂OH ОН OH н ОН -CH₂ H\H ОН н н ОН CH2OH н ОН но н н ОНarrow_forwardGiven the structure of disaccharide below: (a) is it reducing or non-reducing?(b) will it react positively with Benedict's reagent and (c) what specific name of glycosidic linkage of the disaccharide is given?arrow_forward
- When D-gulose forms a ring structure, a) b) a ketone and a hydroxyl group react to form a hemiketal. the ring is unstable at neutral pH. the ring contains four stereogenic centers. an intramolecular reaction creates a glycosidic bond.arrow_forwardGiven the structure of disaccharide below: (a) is it reducing? (b) will it react positively with Benedict's reagent and (c) what specific glycosidic linkage is the name of the disaccharide?arrow_forwardGiven the following disaccharide: Sugar frament A has what structure (ketal, acetal, hemiacetal, hemiketal)? The two monosaccharides are linked by what bond (α-1,3-glycosidic bond, β-1,3-fructosidic bond, β-1,3-glycosidic bond, α-1,3-fructosidic bond)arrow_forward
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