What is the major biological source of lactose?

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
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What is the major biological source of lactose?

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Assignment A
Biologically Important Disaccharides
1. Maltose is a disaccharide isolated from amylose that consists
of two glucose units linked a(14). Draw the structure of this
molecule.
2. Sucrose is a disaccharide formed by linking a-D-glucose and
B-D-fructose by an (a1 = B2) bond. Draw the structure of this
disaccharide.
3. What is the major biological source of lactose?
4. What metabolic defect causes galactosemia?
5. What simple treatment prevents most of the ill effects of
galactosemia?
6. What are the major physiological effects of galactosemia?
7. What is lactose intolerance?
8. What is the difference between lactose intolerance and
galactosemia?
Transcribed Image Text:6:38 10.0 KB/S 90 Assign A.JPG Assignment A Biologically Important Disaccharides 1. Maltose is a disaccharide isolated from amylose that consists of two glucose units linked a(14). Draw the structure of this molecule. 2. Sucrose is a disaccharide formed by linking a-D-glucose and B-D-fructose by an (a1 = B2) bond. Draw the structure of this disaccharide. 3. What is the major biological source of lactose? 4. What metabolic defect causes galactosemia? 5. What simple treatment prevents most of the ill effects of galactosemia? 6. What are the major physiological effects of galactosemia? 7. What is lactose intolerance? 8. What is the difference between lactose intolerance and galactosemia?
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Assignment B
Polysaccharides
1. What is the difference between the structure of
cellulose and the structure of amylose?
2. How does the structure of amylose differ from
that of amylopectin and glycogen?
3. What is the major physiological purpose of
glycogen?
4. Where in the body do you find glycogen stored?
5. Where are a-amylase and ß-amylase produced?
6. Where do a-amylase and ß-amylase carry out
their enzymatic functions?
Transcribed Image Text:6:38 71.0 KB/S 90 Assign B.JPG Assignment B Polysaccharides 1. What is the difference between the structure of cellulose and the structure of amylose? 2. How does the structure of amylose differ from that of amylopectin and glycogen? 3. What is the major physiological purpose of glycogen? 4. Where in the body do you find glycogen stored? 5. Where are a-amylase and ß-amylase produced? 6. Where do a-amylase and ß-amylase carry out their enzymatic functions?
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