Answer in a few sentences please :) if possible 5. What are the similarities and
ID: 219818 • Letter: A
Question
Answer in a few sentences please :) if possible 5. What are the similarities and differences between the chemical structures of maltose, lactose, and sucrose? 6. In living organisms, there are both homoglycans and heteroglycans. Identify a heteroglycan in nature and discuss the structure and function of the heteroglycan in the organism. 7. Describe the important noncovalent interactions important to cellulose structure. 8. What are the similarities and differences between cellulose and chitin? 9. How can such a simple difference-the difference between alpha and beta glycosidic bonds-produce differences in function and three-dimensional structure as drastic as those seen between amylose and cellulose? 10. A popular non-prescription preventative treatment for arthritis is the ingestion of dietary supplements containing glucosamine. Anecdotal evidence in humans and previous date from veterinary studies have shown that these treatments offer relief, and some protection from, arthritic joint pain. Explain why these supplements might benefit arthritis patients.
Explanation / Answer
5. Maltose = Two glucose molecules joined with an alpha 1 ---> 4 linkages.
Lactose = One glucose molecule joined to one galactose molecule with a beta 1 --->4 linkage.
Sucrose = One glucose molecule joined to one fructose molecule with an alpha 1 ---> beta 2 linkage.
Maltose and Lactose are reducing sugars. Sucrose is a non-reducing sugar.
6. Heteroglycan = Heteropolysaccharide.
Ex: Pectin.
Pectin is an essential component of the cell wall in plant cells.
7. Non-covalent interactions in cellulose structure = Hydrogen bonds, Vander Wal interactions and dipole interaction.
These interactions maintain the integrity and stability of the structure.
8. Cellulose is a homopolymer of glucose. Chitin is a homopolymer of acetylglucosamine. Cellulose is found in plant cell walls. Chitin is found in fungi and arthropods. Both are linear, water-insoluble, structural polymers that can form fibers. Cellulose is the most abundant polysaccharide on earth. Molecular formula of cellulose = (C6H10O5)n. Molecular formula of chitin = (C8H13O5)n.