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4. Starch forms a dark blue complex when treated with iodine. Partially hydrolyzed forms (still a polymer) of starch (erythrodextrin and gly- cogen) give a red complex. These colored complexes become colorless when heated but the color comes Amylosehelice with the glucose-monomerunit: OH back again upon cooling. A single drop of I, in KI solution is enough to give an unmistakable test on a solu- tion or a solid. Draw a representative alpha helix structure with I, embed- ded within each turn to represent the dark blue complex. HO OH

4. Starch forms a dark blue complex when treated with iodine. Partially hydrolyzed forms (still a polymer) of starch (erythrodextrin and gly- cogen) give a red complex. These colored complexes become colorless when heated but the color comes Amylosehelice with the glucose-monomerunit: OH back again upon cooling. A single drop of I, in KI solution is enough to give an unmistakable test on a solu- tion or a solid. Draw a representative alpha helix structure with I, embed- ded within each turn to represent the dark blue complex. HO OH

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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4. Starch forms a dark blue complex when treated with iodine. Partially hydrolyzed forms (still a polymer) of starch (erythrodextrin and gly- cogen) give a red complex. These colored complexes become colorless when heated but the color comes Amylosehelice with the glucose-monomerunit: OH back again upon cooling. A single drop of I, in KI solution is enough to give an unmistakable test on a solu- tion or a solid. Draw a representative alpha helix structure with I, embed- ded within each turn to represent the dark blue complex. но OH
Transcribed Image Text:4. Starch forms a dark blue complex when treated with iodine. Partially hydrolyzed forms (still a polymer) of starch (erythrodextrin and gly- cogen) give a red complex. These colored complexes become colorless when heated but the color comes Amylosehelice with the glucose-monomerunit: OH back again upon cooling. A single drop of I, in KI solution is enough to give an unmistakable test on a solu- tion or a solid. Draw a representative alpha helix structure with I, embed- ded within each turn to represent the dark blue complex. но OH
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