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Both glycogen and amylopectin are polysaccharides composed of glucose units linked together by alpha glycosidic bonds. They are both storage forms of glucose in organisms, with glycogen being the main storage form in animals, and amylopectin being a key component of starch in plants.

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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.


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.


The structural difference between amylose and amylopectin?

Amylose is type of starch which is unbranched. Consisting 1-4 Alfa glycosidic linkage. It is not easy to digested and takes less space than amylopectin. Amylopectin is branched and consisting 1 alfa 1-6 linkage per 30 alfa 1-6 linkage. It is similar to glycogen expecting lower level of branching.


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.


How does the structure of amylose compare to the structure of glycogen?

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.

Related Questions

What is the difference between amylopectin and glycogen?

Amylopectin is a branched chain polymer of glucose found in plants, while glycogen is a highly branched polymer of glucose found in animals and humans. Both serve as storage forms of glucose, with glycogen being the main form of energy storage in animals and humans, while amylopectin is the main form of energy storage in plants.


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.


How are starch and glycogen similar and how do they differ?

Startch have two types of polymer chain,one is amylose and another is amylopectin.Amylose is simple straight chain of glucose(1--->4 linkage),while amylopectin have branching.At branching point,there is 1--->6 linage and 1--->4 linkage in every subchain. So,in startch 1-6 linkage comes after 20 to 25 gucose monomer,while in gycogen this linkage comes very frequently.....


What linkages would you expect to find at a branch point in glycogen or amylopectin?

At a branch point in glycogen or amylopectin, you would expect to find α-1,6 glycosidic linkages. These linkages connect the linear chains to the branch point, forming the characteristic tree-like structure of these polysaccharides. In contrast, the main linear chains are connected by α-1,4 glycosidic linkages.


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.


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.


What are the reactants of amylase?

The Substrate for amylase are starch (amylose and Amylopectin), glycogen, and various Oligosaccharides.


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.


The structural difference between amylose and amylopectin?

Amylose is type of starch which is unbranched. Consisting 1-4 Alfa glycosidic linkage. It is not easy to digested and takes less space than amylopectin. Amylopectin is branched and consisting 1 alfa 1-6 linkage per 30 alfa 1-6 linkage. It is similar to glycogen expecting lower level of branching.


Starch and are common carbohydrate polysaccharides found in plants?

glycogen


What is the simplest form of starch?

The two components of starch are amylose and amylopectin. Amylose is a straight chain molecule made of glucose molecules joined by alpha 1-4 links. Amylopectin is a branched molecule made of glucose joined by alpha 1-4 links, with branches joined by alpha 1-6 links.


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.