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Recent research has actually shown that Glycogen IS actually a form of amylopectin. Amylopectin is a branched polysaccharide joined by alpha-1,4 linkages with branch points of alpha-1,6. The 1-4 linkage is because C1 of one glucose molecule is linked to the C4 of the next. The 1-6 linkage occurs every 10 glucose molecules or so. The alpha-amylase hydrolyzes only the alpha-1,4... NOT the alpha-1,6.
What else can I help you with?
Does glycogen and amylopectin have a helical structure like amylose and if yes why is it that glycogen and amylopectin form red-violet colouration with potassium iodide?
Yes, they are helical. The change in colouration is due to iodine being trapped in the helix. Difference in colour is due to the different wavelength of light being absorbed when iodine form bonds with the glucose molecules in the helix.
Compare the two storage polysaccharides?
Starch is the primary storage polysaccharide in plants, consisting of amylose and amylopectin. Glycogen is the storage polysaccharide in animals, stored mainly in the liver and muscles. Both serve as energy reserves, but glycogen is more branched and has more α-1,6-glycosidic bonds, making it more readily available for quick energy release compared to starch.
What are the key differences between amylose and amylopectin in terms of their structure and function?
Amylose and amylopectin are both types of starch molecules found in plants. Amylose is a linear chain of glucose molecules, while amylopectin is a branched chain. Amylose is responsible for the formation of a gel-like substance when cooked, while amylopectin provides a quick source of energy due to its branching structure.
Why is amylopectin more compact than amylose?
Amylopectin is more compact than amylose because it is a branched polysaccharide with both α-1,4 and α-1,6 glycosidic bonds. These branching points create a more compact structure compared to the linear chain of amylose, allowing amylopectin to store more glucose units in a smaller space.
What are the names of the two polymers formed from alpha gluscose?
The two polymers formed from alpha glucose are starch and glycogen. Starch is the storage form of glucose in plants, while glycogen is the storage form of glucose in animals.
Does Glycogen has more accessible cleavage sites than amylose?
Yes, glycogen has more accessible cleavage sites than amylose because it is a highly branched polymer with multiple alpha-1,6-glycosidic bonds in addition to alpha-1,4-glycosidic bonds. This branching structure allows for more points of cleavage by enzymes like glycogen phosphorylase compared to the linear structure of amylose.
What is the function of amylose?
Amylose helps keep the structure of plants amylose is good for storage in plants.
Which of these carbohydrates is impossible for humans to digest cellulose amylose glycogen galactose?
cellulose
Does glycogen and amylopectin have a helical structure like amylose and if yes why is it that glycogen and amylopectin form red-violet colouration with potassium iodide?
Yes, they are helical. The change in colouration is due to iodine being trapped in the helix. Difference in colour is due to the different wavelength of light being absorbed when iodine form bonds with the glucose molecules in the helix.
Compare the two storage polysaccharides?
Starch is the primary storage polysaccharide in plants, consisting of amylose and amylopectin. Glycogen is the storage polysaccharide in animals, stored mainly in the liver and muscles. Both serve as energy reserves, but glycogen is more branched and has more α-1,6-glycosidic bonds, making it more readily available for quick energy release compared to starch.
Why glycogen gives red colour with iodine?
When Iodine is added to amylose, the helical shape of the unbranched polysaccharide traps Iodine molecules, producing a deep blue-black complex. Amylopectin, cellulose, and Glycogen react with iodine to give red to brown colors. Glycogen produces a reddish-purple color.
What are the key differences between amylose and amylopectin in terms of their structure and function?
Amylose and amylopectin are both types of starch molecules found in plants. Amylose is a linear chain of glucose molecules, while amylopectin is a branched chain. Amylose is responsible for the formation of a gel-like substance when cooked, while amylopectin provides a quick source of energy due to its branching structure.
Why is amylopectin more compact than amylose?
Amylopectin is more compact than amylose because it is a branched polysaccharide with both α-1,4 and α-1,6 glycosidic bonds. These branching points create a more compact structure compared to the linear chain of amylose, allowing amylopectin to store more glucose units in a smaller space.
What type of polysaccharide is found in potatoes?
Starch is found potatoes, not Glycogen. Glycogen is the plant equivalent of animal glycogen. A potato has starch but no glycogen; muscle cells have glycogen but no starch. The starch we eat is broken into glucose in the stomach/small intest and then reassembled in the muscle cells as glycogen.
Two polysaccharides that store glucose are?
If by 2 polysaccharides you mean any two, then some of the common examples would be cellulose, peptidoglycan, starch (amylose and amylopectin), hemicellulose, chitin, glycogen ........... the list is almost endless.
Are starches with a relatively large amount of amylose digested more quickly than those with amylopectin?
Enzymes are often substrate-specific, meaning they will only catalyze a reaction with a certain molecule. The difference in structure between amylose and amylopectin causes amylase to catalyze one and not the other.
What are the names of the two polymers formed from alpha gluscose?
The two polymers formed from alpha glucose are starch and glycogen. Starch is the storage form of glucose in plants, while glycogen is the storage form of glucose in animals.
